BMW Cooling System Parts & Accessories for BMW Z Series E85/6 (2003-2008)

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The cooling system is arguably the weakest point in numerous BMWs. If you drive an aging BMW or plan on taking your car to the track like we do, we recommend beefing up your cooling system before going to the track. Generally, the main components in your cooling system that are prone to failure include the following: expansion tank, factory hoses, water pump, thermostat, fan (especially if your vehicle comes factory with a clutch fan), and radiator. Factory BMW expansion tanks are plastic and prone to either breaking off at connection points or combusting. As factory rubber hoses age they either crack or break over time - we offer silicone cooling hose upgrades for most applications to avoid future failures. If you have an older vehicle, your water pump likely comes from the factory with a plastic impeller - we offer upgraded water pumps with metal impellers that are far more reliable. Newer model BMWs utilize electric water pumps - BMW spent millions of dollars engineering these water pumps, but they fail so often that we recommend replacing at 60,000 mile service intervals to avoid being stranded on the side of the road. In terms of thermostats, we offer various upgraded thermostats for racing applications. If your BMW utilizes a clutch fan from the factory, we have several options available in terms of universal electric fans - we recommend replacing these to avoid sending brittle plastic fan blades through your hood. For radiators, we recommend swapping out your radiator for one that does not use plastic connection points like your factory radiator.

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Water Pump And Thermostat Kit - BMW N52 3.0L
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T#:17073598
Part#: 11537549476KT
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Includes everything you may need to replace your water pump and thermostat.
Water Pump And Thermostat Kit
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T#:5376274
Part#: 11517586925TKT
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Everything you need to replace your water pump and thermostat. The water pumps in these BMW models are known for failure near 80,000 miles is a very common issue often times leaving the owner stranded. The aftermarket kit offered provides a single stop for water pump and thermostat replacement needs to save the search and get you back on the road. Kit includes: Mahle-Behr thermostat Water pump Genuine BMW coolant thermostat to water pump hose Mounting hardware required for both the thermostat and water pump
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Complete Cooling System Overhaul Package - 2003-4/2004 Z4 2.5 3.0 ...
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T#:339100
Part#: TMS224320
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This is a customizable cooling system overhaul kit, which starts off with the basic radiator and water pump and can be configured to replace all the M54 common cooling system failure parts in one package. This cooling system package is for the 2003-2005 Z4 Roadster.

The Z4 cooling system is much like that of the sister 3 series. Several of the primary cooling components are prone to failure within 60k miles (or less in many cases). A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the radiator & waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your cooling system. Available with our kit is an OEM Behr radiator, an Original BMW water pump (with updated composite impeller), thermostat (complete with housing), radiator cap, new hoses, and other essential cooling parts.

Optional items (which can be added below):
  • Radiator cap
  • Major cooling hoses
  • Original BMW antifreeze
  • Upgrade the water pump to a Stewart EMP High Performance pump
  • Add a new coolant expansion tank (known for cracking)
  • Include a new coolant level sensor (known for failing / throwing "check coolant" messages)
  • Include a new coolant temp sensor (located in the lower radiator hose) (re-using the old sensor and seal may lead to a leak)
  • Add a new thermostat for an automatic transmission (located with the expansion tank).
    This cooling system overhaul kit fits the following BMWs:
    2003-2005 E85 BMW Z4 2.5i Z4 3.0i

    Please put a check in the boxes next to the items you wish to order.
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    Thermostat Replacement Kit - E39 E46 E60 E53 Z3 Z4 With M54, M52TU En...
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    Packaged by Turner - Corporate Logo
    T#:554073
    Part#: 11537509227KT3
    Ships on Nov 27, 2026
    $ 98.99 USD
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    $ 98.99 USD
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    When it comes time to replace your thermostat, be sure you have everything you need. This kit includes everything you need to replace your thermostat, including the thermostat.

    Kit includes:

    • Mahle-Behr thermostat with gasket
    • Thermostat mounting hardware
    • 1 liter of coolant

    Applications:
    1999-2003 E39 528i, 525i, 530i sedan, touring wagon (M52TU engine, M54 engine)
    1999-2005 E46 323, 328, 325, 330 sedan, coupe, cabrio, touring wagon (M52TU engine, M54 engine)
    2004-2005 E60 525i, 530i sedan, touring wagon (M54 engine)
    2001-2006 E53 X5 3.0 (M54 engine)
    2004-2006 E83 X3 2.5i X3 3.0i (M54 engine)
    1999-2002 Z3 2.3. Z3 2.5i, 2.8 Z3 3.0i (M54 engine)
    2003-2005 Z4 2.5i, Z4 3.0 (M54 engine)

     

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    Water Pump and Thermostat Package - N51/N52 Engine - E82 128i, E9X 32...
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    Packaged by Turner - Corporate Logo
    T#:42873693
    Part#: TMS206099GKT
    In Stock
    $ 728.38 USD
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    Our water pump/thermostat overhaul includes:

    • Electric Water Pump
    • Aluminum mounting screws for water pump
    • Thermostat
    • Connecting hose from thermostat to water pump 
    • Hose clamps

     

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    OEM Style Hose Clamps
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    Turner Motorsport - Corporate Logo
    T#:338927
    Part#: HOSE-CLAMPS
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    $ 3.99

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    Hose clamps for radiator hoses, coolant hoses, vacuum hoses, or intake hoses. These hose clamps are the same style as your OEM hoses with a smooth inside band to prevent cutting into the hose material.
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    Complete Cooling System Overhaul Package - 4/2004-2005 Z4 2.5 3.0 ...
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    T#:339099
    Part#: TMS16430
    In Stock
    Sale - Save 11% $ 508.99

    This product was last offered at the strikethrough price on
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    Starting at $ 451.24 USD
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    This is a customizable cooling system overhaul kit, which starts off with the basic radiator and water pump and can be configured to replace all the M54 common cooling system failure parts in one package. This cooling system package is for the 2003-2005 Z4 Roadster.

    The Z4 cooling system is much like that of the sister 3 series. Several of the primary cooling components are prone to failure within 60k miles (or less in many cases). A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the radiator & waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your cooling system. Available with our kit is an OEM Behr radiator, an Original BMW water pump (with updated composite impeller), thermostat (complete with housing), radiator cap, new hoses, and other essential cooling parts.

    Optional items (which can be added below):
  • Radiator cap
  • Major cooling hoses
  • Original BMW antifreeze
  • Upgrade the water pump to a Stewart EMP High Performance pump
  • Add a new coolant expansion tank (known for cracking)
  • Include a new coolant level sensor (known for failing / throwing "check coolant" messages)
  • Include a new coolant temp sensor (located in the lower radiator hose) (re-using the old sensor and seal may lead to a leak)
  • Add a new thermostat for an automatic transmission (located with the expansion tank).
    This cooling system overhaul kit fits the following BMWs:
    4/2004-2005 E85 BMW Z4 2.5i Z4 3.0i

    Please put a check in the boxes next to the items you wish to order.
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    Water Pump & Thermostat Kit - BMW Z3 Z4 S54 3.2L
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    T#:48194755
    Part#: ZS54WPTKT2
    Ships on Oct 21, 2026
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    $ 965.99

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    04-22-2026

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    It is important that your coolant system is serviced at regular intervals to ensure a long life. Over time, coolant systems are exposed to high temperatures and repeated thermal cycling, which causes warping, cracking, and hardening of plastics and rubber components in the coolant system. This can lead to coolant leaks and overheating, which can result in extensive engine damage if not resolved in a timely manner. This Water Pump & Thermostat kit helps to address a few of the most problematic parts, replacing these items entirely to keep your cooling system running optimally and efficiently.
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    BMW Antifreeze Coolant - 1 Gallon
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    Genuine BMW - Corporate Logo
    T#:1474
    Part#: 82141467704
    In Stock
    6% off MSRP $ 28.25

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 26.48 USD
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    6% off MSRP
    $ 28.25

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 26.48 USD
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    The use of Original BMW Anti-Freeze/Coolant will ensure sufficient cooling in summer and protection against freeze-ups in winter. BMW Antifreeze/Coolant will also guard your vehicle's various engine components against corrosion.
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    EMP/Stewart High Performance Water Pump for BMW M50/M52/M54/S50/S52 6...
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    Stewart Components - Corporate Logo
    T#:3780
    Part#: 888010330
    Ships in 4 Business Days
    $ 199.99 USD
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    $ 199.99 USD
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    This high performance water pump is a direct replacement pump designed to fit a wide range of BMW engines with no modifications. That includes accepting the Factory Fan Clutch. The front of the BMW High Performance Water Pump is stock appearing giving it that classic BMW look while the back is all business. Features up to 20% increase of water flow over stock pump, and it TWICE as efficient as factory pump, much less parasitic drag than other pumps, stainless steel impeller, heavy duty bearing, high quality water seal. Manufactured by EMP / Stewart Components. THIS PUMP COMES WITH A LIMITED LIFETIME WARRANTY

    Fits all US Spec M50/52/54 and S50/52 6 cylinder engines including:
    E36 chassis 1992-1999 325,328, 323 and M3
    E46 chassis 1999-2005 323,325,328 &330
    E34 chassis 1991-1995 525i
    E39 chassis 1997-2003 525i, 528i & 530i
    E53 X5 SAV 1999-2003 6 cylinder models
    Z3 2.8 and 3.0 6 cylinder engines.
    Z4 (Not M) including Z4 2.5 & 3.0
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    Water Pump - M50, M52, M52TU, and M54 Engines with Metal Impeller ...
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    Geba - Corporate Logo
    T#:341052
    Part#: 11517527910
    In Stock
    $ 105.99

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    02-27-2026

    $ 62.99 USD
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    $ 62.99 USD
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    The early M50/M52 engines had a serious weak point: the water pump. BMW originally used a plastic impeller in the waterpump. This would degrade over time and eventually break apart. Your car overheats immediately. This water pump is an updated one with a metal impeller. BMW has since released a water pump with a composte impeller that does not have the same issues and is just as reliable as the metal impeller version. But for piece of mind, the metal impeller is tough to beat.

    Geba builds all of their pumps to exceed factory specifications by using a metal impeller. This offers a huge improvement over stock and a massive increase in reliability. Servicing all major European models, Geba has you covered when it comes time for a new water pump.

    This waterpump fits the following BMWs:
    1999-2006  E46 BMW  323i, 323Ci, 328i, 328Ci, 325i, 325Ci, 325xi, 330i, 330Ci, 330xi
    1997-2003  E39 BMW  528i, 525i, 530i
    2004-2010  E83 BMW  X3 2.5i & 3.0i
    2000-2006  E53 BMW  X5 3.0i
    1997-2002  Z3 BMW  Z3 2.8, Z3 2.5, Z3 3.0, MZ3 (S52)
    2003-2005  E85 BMW  Z4 2.5i & Z4 3.0i
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    Black Magic Parts Cylinder Head Coolant Flange - BMW N52 N54 N55 3.0L...
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    Precision Raceworks - Corporate Logo
    T#:38094360
    Part#: 601-0003
    In Stock
    $ 24.99 USD
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    The Black Market Parts (by Precision Raceworks) BMW Billet Coolant Flange was designed as a replacement for the factory plastic flange that is found in the hose that connects the thermostat to the cylinder head. The plastic flange commonly cracks, which leads to coolant loss and engine overheating. Replace your coolant flange before disaster occurs and leaves you stuck on the side of the road.
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    ECS Tuning Aluminum Coolant Bleeder Screw
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    ECS - Corporate Logo
    T#:363070
    Part#: 003530ECS01A
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    Sale - Save 40% $ 34.99

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    05-02-2026

    $ 20.99 USD
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    Replace the flimsy plastic bleeder screw used in the coolant expansion tank or in one of the cooling system hoses with this high quality, durable, aluminum bleeder screw. The stock plastic screw can deform over time due to heat or even regular use. We have even seen the head of the screw snap off, leaving the threaded body stuck in the expansion tank. This aluminum screw will help to prevent sudden failure of the bleeder screw, which can result in immediate overheating of the car.

    ECS Tuning's Aluminum Coolant Bleeder Screw replaces Genuine BMW Part Number 17111712788

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    PENTOFROST NF 50/50 Antifreeze / Coolant Prediluted / Premixed - 1 G...
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    Pentosin - Corporate Logo
    T#:34181293
    Part#: 8114308
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    $ 20.99 USD
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    Blue G11/G48 Coolant Pre-Mixed 50/50
    Thermostat
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    Bremmen Parts - Corporate Logo
    T#:15511826
    Part#: 11537549476
    In Stock
    Sale - Save 18% $ 84.99

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    $ 69.99 USD
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    Overheating your N52 or N54 engine can be detrimental to the longevity of your engine. We also recommend replacing your hardware 07119903851 x2

    Bav Auto Thermostat With Aluminum Housing - M52TU M54
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    Bavarian Autosport - Corporate Logo
    T#:12544802
    Part#: 11531437040
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    Sale - Save 19% $ 104.99

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    $ 84.99 USD
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    The plastic thermostat cover in your BMW is a known point of failure. Throughout years of repeated contact with hot coolant, the plastic can crack and cause massive coolant leaks and potential overheating. Eliminate one of the weak links in your cooling system with a replacement aluminum thermostat housing. By installing this aluminum unit, you have no worries as far as plastic housing cracks go
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    OEM Wahler Thermostat With Housing - E46 E53 E60 E83 M54
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    Wahler - Corporate Logo
    T#:341054
    Part#: 11537509227
    In Stock
    $ 66.99 USD
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    $ 66.99 USD
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    Stop leaks before they start with this new Thermostat With Housing from Wahler. Despite the fact that most BMW models are brilliant, most have common issues that can plague you during your ownership of the car. This part is one of those issues, as they are known to crack over time. This replacement part is perfect stop a crack and possibly a leak before it starts.
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    ECS Billet Cylinder Head Outlet Hose Adapter - BMW N52 N54 N55 3.0L N...
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    ECS - Corporate Logo
    T#:556105
    Part#: 024797ECS01
    In Stock
    Sale - Save 25% $ 74.99

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    $ 56.24 USD
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    Some of the biggest issues when owning a BMW can come from cooling system components. Even through years of improvement, the same failure is seen with the plastic fittings and adapters from years of hot to cold temperature fluctuation. The N52/N54/N55/N20 engine sees failure at the plastic cylinder head outlet adapter connecting the cylinder head to the thermostat hose. The stock plastic adapter simply shears off at the end of the barbed fitting, creating a massive coolant leak. The engineering team at ECS Tuning decided a billet aluminum piece was a much better option to contend with the temperature fluctuation. Since other offerings on the market want you to modify your OE hose to be reused, they even developed a silicone replacement hose. These 2 pieces can be purchased separately if you decide to reuse your existing OE hose or in a package kit together for a single click upgrade. Features: Manufactured from billet 6061-T6 with type III anodized for exceptional durability and corrosion resistance. Much stronger part than OEM plastic ​​Will not become brittle and fatigued over time due to thermal cycling. This will prevent the part from breaking during removal and re-installation. Follows OEM form for perfect fitment. Utilizes (and includes) OEM O-ring 11537545278 to ensure a proper seal. Recommended clamp size is 25-40mm
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    BMW Fan Clutch Wrench Set - CTA
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    CTA Tools - Corporate Logo
    T#:640926
    Part#: CTAA886L
    In Stock
    $ 48.58 USD
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    32mm Wrench removes the lock nuts on the thermo-viscous fan, while the other holds the water pump pulley while loosening the radiator fan
    E36/E46/Z3/Z4 ECS Tuning Aluminum Water Pump Pulley - Black
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    ECS - Corporate Logo
    T#:363707
    Part#: 001977ECS03A
    In Stock
    Sale - Save 5% $ 101.99

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    $ 96.89 USD
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    $ 101.99

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    Most of the pulleys on your BMW engine are plastic, which become brittle and frail over time and from engine bay heat. A failed pulley could leave you stranded which is why it is vital to inspect the pulleys during routine maintenance. This is an aluminum version of the stock water pump pulley used on the M50/M52/M52TU/M54 engine in the E36, E46, Z3, Z4, and other models. It uses the same hardware and the original belt as the stock plastic pulley. But the aluminum will last much longer.
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    Genuine BMW Temperature Sensor
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    Genuine BMW - Corporate Logo
    T#:367843
    Part#: 13621433076
    In Stock
    16% off MSRP $ 66.05

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 55.45 USD
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    16% off MSRP
    $ 66.05

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 55.45 USD
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    ECS Aluminized Silicone Water Pump Hose V2.0 - - E9x E8x E6x N52 N54...
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    ECS - Corporate Logo
    T#:640062
    Part#: 008286LA01
    In Stock
    Sale - Save 35% $ 103.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 67.59 USD
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    When it comes to cooling system hose replacement, the "U" shaped hose connecting the water pump to the thermostat is usually the first to fail. A lot of this comes from its close proximity to the hot downpipes, while some of this failure comes from the sharp bends in the hose. 

    Why not upgrade when you're due for a replacement? The ECS Tuning silicone hose replacement fixes these issue with two key features in their design. Offering this hose in a much more heat resistant silicone instead of OE rubber and having the hose wrapped in aluminum. The aluminum coating acts as a heat shield to further protect the silicone as well as reducing the temperatures forced on the coolant running through the hose. 

    Replaces OE hose #11537545665

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    Elring Freeze Plug
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    Elring - Corporate Logo
    T#:591492
    Part#: 11117530262
    In Stock
    $ 25.99

    This product was last offered at the strikethrough price on
    04-06-2026

    $ 21.99 USD
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    $ 21.99 USD
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    Replace your missing freeze plug today - 110x13mm
    Race German Lightweight Aluminum Water Pump Pulley
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    Race German - Corporate Logo
    T#:27705450
    Part#: M5XLTWWPP
    Back Ordered
    $ 59.99 USD
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    Mishimoto Adjustable Fan Controller Kit
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    Mishimoto - Corporate Logo
    T#:363510
    Part#: MMFANCNTLUPROBE
    In Stock
    9% off MSRP $ 98.00

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    $ 88.99 USD
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    9% off MSRP
    $ 98.00

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 88.99 USD
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    Take Control of Your Engine Cooling Fan with Mishimoto's Manual Fan Controller Kit

    Ensure your engine runs at the perfect temperature by using this versatile manual fan controller system, compatible with all 12v fan-equipped vehicles. With adjustable activation temperature settings ranging from 150°F to 240°F, you have precise control over your engine's cooling fan. The kit includes a probe-style temperature sensor and a generous 7 feet of wire, making it suitable for installation in vehicles of various sizes.

    For added convenience, the system is equipped with a built-in A/C override feature, ensuring your cooling system works seamlessly. It's designed to work with one or two electric fans drawing a combined 25 amps or less. The package includes all the essential wiring connectors and hardware needed for a trouble-free installation.

    With a lifetime warranty from Mishimoto, you can trust in the quality and durability of this manual fan controller kit.

    WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to all companies selling products in California.

    Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warnings, visit www.P65Warnings.ca.gov.

    WARNING! Prog 65 may apply to this product.Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm.For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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    CSF High Performance Aluminum Radiator - E46
    For vehicles with manual transmission only
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    CSF - Corporate Logo
    T#:384650
    Part#: 3055
    In Stock
    $ 409.00 USD
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    $ 409.00 USD
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    CSF is one of the premier cooling product specialists available on the market thanks to designs such as their High Performance Aluminum Radiators. Using a single pass designed core, this radiator gives you all the cooling you could ever need. Paired with these radiators are CNC machined brackets and corrosion resistant hardware that allow final installation to have a same as stock fitment! This enables you to have much higher cooling without having to cut away any metal or delete any important components just for the sake of lower coolant temperatures. 

    Features:

    • Two-row, triple-pass design radiator core
    • CNC machined mounting brackets
    • All needed hardware included
    • Hand polished aluminum with a mirror-like finish
    • Stock fitment prevents modification to engine bay

    Fits the following BMWs:
    1998-2006 E46 BMW All Submodels
    2002-2008 E85/86 BMW M Coupe & M Roadster

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    OEM Wahler 80 Degree Thermostat - E46 M3, MZ3 S54, Z4 M
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    Wahler - Corporate Logo
    T#:360524
    Part#: 11531318274
    In Stock at Vendor
    $ 105.36

    This product was last offered at the strikethrough price on
    06-02-2026

    $ 80.99 USD
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    Replacement 80* Celcius thermostat for E46 M3, Z3M w S54 engine, Z4M. The thermostat can be replaced on the E46 M3 without removing the water pump. This can save you money if the pump still has life left on it but the thermostat needs to be done now. Symptoms of a bad thermostat include an erratic temp gauge and a fault code. When replacing the thermostat, there are three o-rings that will likely need to be replaced between the thermostat and the water pump housing, and two on the coolant tube going to the head. We also recommend new hoses, clamps, and BMW coolant. Replacement should take about one hour.
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    Schwaben Coolant Refill/Air Purge Tool
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    Schwaben - Corporate Logo
    T#:362940
    Part#: 003466SCH01
    Ships in 3 Business Days
    Sale - Save 20% $ 109.99

    This product was last offered at the strikethrough price on
    05-02-2026

    $ 87.99 USD
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    This product was last offered at the strikethrough price on
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    When it comes to BMW's we all know the weak point is commonly in the cooling system, many models proving hard to bleed the air pockets out after the refresh. The coolant refill tool solves this problem, ensuring that you get an air pocket free fill. The entire task is as simple as draining the system like normal, reinstalling the drain plugs and hooking the tool up to your refill location. The reason this tool works so well is due to the venturi valve, it converts air pressure from the compressor to vacuum inside the cooling system, then with a twist of a valve sucks coolant right into the system using the vacuum pressure.
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    Genuine BMW Heater Inlet Pipe - E46 E39 E53 E83 E85 Z3
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    Genuine BMW - Corporate Logo
    T#:6939
    Part#: 11531705210
    In Stock
    $ 66.99 USD
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    This is the Genuine BMW plastic heater inlet pipe that connects the cylinder head to the heater inlet on cars with the M52 or M54 engine.The plastic on this hose becomes brittle over time and eventually leads to failure.

    This item fits the following BMWs:
    1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
    1999-2003 E39 BMW 525i 528i 530i
    2004-2006 E83 BMW X3 2.5i X3 3.0i - M54 engine
    2000-2006 E53 BMW X5 3.0i
    1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
    2003-2005 E85 BMW Z4 2.5i Z4 3.0i
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    Genuine BMW Water Pipe - E46 E39 Z4 Z3 (M52 M54)
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    Genuine BMW - Corporate Logo
    T#:360688
    Part#: 11537502525
    In Stock
    $ 90.99 USD
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    $ 90.99 USD
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    Replace your cracked/broken coolant pipe with this Genuine BMW pipe to ensure long term reliability and perfect fitment.

    Genuine BMW Auxiliary Fan Switch
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    Genuine BMW - Corporate Logo
    T#:341058
    Part#: 13621433077
    In Stock
    16% off MSRP $ 66.05

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 55.55 USD
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    16% off MSRP
    $ 66.05

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 55.55 USD
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    Genuine BMW Transmission Drain Plug - Manual Transmission - Multiple ...
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    Genuine BMW - Corporate Logo
    T#:15238
    Part#: 23127602815
    In Stock
    7% off MSRP $ 24.30

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 22.50 USD
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    7% off MSRP
    $ 24.30

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 22.50 USD
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    Genuine BMW Screw Plug - M18X1,5X12
    This item fits the following BMW Chassis:
    E82 1M Coupe,E82,E85 Z4,E89 Z4,E90,E92,E93,F22,F30,F31,F32,F33,F34,F36,F80 M3,F82 M4,F83

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    Genuine BMW Expansion Tank Cap - E3X / E53 / Z4
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    Genuine BMW - Corporate Logo
    T#:207187
    Part#: 17117639022
    In Stock
    21% off MSRP $ 34.96

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 27.67 USD
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    21% off MSRP
    $ 34.96

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 27.67 USD
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    Genuine BMW Radiator Cap - 2,0Bar
    This item fits the following BMW Chassis:
    E36 M3,E39 M5,E46 M3,E85 Z4M,E53 48IS,E36,E38,E39,E46,E53 X5,E65,E83 X3,E85 Z4,E86 Z4,F06,F10,F12,F13

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    Coolant Vacuum Purge & Refill Tool Set
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    Schwaben - Corporate Logo
    T#:402498
    Part#: 024948SCH01A
    In Stock
    Sale - Save 25% $ 115.99

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    $ 86.99 USD
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    The Schwaben Coolant Vacuum Fill Tool ensures no air pockets get into your cooling system while you're replacing your coolant - intended for use to refill your cooling system, not for removal. Can be used with Schwaben fluid extractors or with shop air - standard air compressor with a minimum rating of 90 PSI (6.2 bar). Includes all fittings and adapters necessary for use, with a molded storage case to keep your Schwaben Vacuum Fill Tool pristine for future use.
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    Water Pump - N52 3.0L
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    Bavarian Autosport - Corporate Logo
    T#:599823
    Part#: 11517586925
    In Stock
    Sale - Save 10% $ 299.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 269.99 USD
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    $ 299.99

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    $ 269.99 USD
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    Don't take your car's cooling system for granted. A waterpump failure can cost you an engine, which is why preventatively replacing your BMWs waterpump and refreshing the cooling system every 60,000 miles. The water pump is a weak point is the cooling system. Replacing your waterpump will go a long way for keeping your car on the road and operating properly. This water pump fits many 2006 and newer BMW 6 cylinder engines, specifically all the BMWs with the N51, N52, N53 engines. You will also need to purchase replacement aluminum screws Part #11510392553 From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty. This water pump fits the following BMWs: 2008-20xx E82 128i 2006-2006 E90 325i sedan, 330i sedan, 325xi sedan, 330xi sedan 2007-2012 E90 328i sedan, 328xi sedan, 328i xDrive sedan 2007-2012 E92 328i coupe, 328xi coupe, 328i xDrive coupe 2007-2012 E93 328i Convertible 2006-2006 E60 525i, 525xi, 530i, 530xi 2007-2010 E60 528i, 528xi, 528i xDrive 2007-2010 E83 X3 3.0i X3 3.0si 2007-20xx E70 X5 3.0si X5 xDrive30i 2006-2008 E85 Z4 3.0si 2009-20xx E89 Z4 sDrive30i
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    OEM Mahle-Behr Thermostat - E82 E9X E60 X3 Z4 with N52 N54 engines ...
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    Mahle-Behr - Corporate Logo
    T#:341203
    Part#: 11537549476
    In Stock
    $ 135.99

    This product was last offered at the strikethrough price on
    06-03-2026

    $ 108.99 USD
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    Engine running a little hot or is the temp gauge not telling you anything? The thermostat might be the likely problem. Many cooling issues start with the thermostat. This is electronically controlled by the engine computer based on the cooling demands from the engine. And cooling components are working harder than ever. Engine performance is also dependent on temperature - as temperatures rise and pass a certain threshold the engine computer will begin reducing power. Stay on top of your cooling maintenance by replacing critical components preventatively. This replacement thermostat fits many of the N51 N52 N53 N54 6 cylinder engines and is an OEM Behr part. 

    The thermostat is located along with the water pump on the side of the engine. To gain access for removal you may need to remove the water pump as well. If the water pump is removed you MUST replace its mounting bolts. You can add them from the options below. We also have a bundled package that includes the water pump, mounting screws, connecting hose, and clamps if you want to replace everything together (recommended). 

    This thermostat fits the following BMWs:
    2008+  E82  BMW 128i 135i
    2007+  E9X  BMW 325i 325xi 328i 328xi 330i 335i 335xi
    2006+  E60  BMW 525i 525xi 528i 528xi 530i 530xi 535i 535xi
    2006+  X3  BMW X3 3.0i X3 3.0si
    2006+  Z4  BMW Z4 3.0i Z4 3.0si
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    FAE Coolant Temperature Sensor - E46 E39 E82 E9X E60 E63 E38 E65 X3 X...
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    FAE - Corporate Logo
    T#:2472
    Part#: 13621433077
    In Stock
    $ 22.99 USD
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    $ 22.99 USD
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    This Cooling system temperature sensor mounts into the lower radiator hose.

    This item fits the following BMWs:
    2008+ E82 BMW 128i
    1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3
    2006+ E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi
    2007+ E92 BMW 328i 328xi 328i xDrive
    2007+ E93 BMW 328i
    1999-2003 E39 BMW 525i 528i 530i 540i M5
    2004-2010 E60 BMW 525i 525xi 530i 530xi 545i 550i M5
    2004+ E63 BMW 645ci 650i M6
    1999-2001 E38 BMW 740i 740il 750il
    2002-2008 E65 BMW 745i 745li 750i 750li 760i 760li
    2004-2006 E83 BMW X3 2.5i X3 3.0i
    2000-2006 E53 BMW X5 3.0i X5 4.4i X5 4.6is X5 4.8is
    2007-2013 E70 BMW X5 3.0si X5 4.8i X5 xDrive30i X5 xDrive48i X5M
    2007-2014 E71 BMW X6 xDrive50i X6M
    2003-2008 Z4 BMW Z4 2.5i Z4 3.0i Z4 3.0si Z4 M Roadster M Coupe
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    Spal Electric Fan Harness with Relay - 185 Degree Switch
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    Spal - Corporate Logo
    T#:598892
    Part#: 185FH
    In Stock
    $ 165.99 USD
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    $ 165.99 USD
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    SPAL® electric fan wiring harness kits are a must-have when installing electric fans. Designed to safely integrate with OEM wiring, the SPAL kits feature a waterproof relay along with printed wires which aid in installation. The wiring kits also feature stainless steel switches with optional switched override capability, fuse holder, and wiring connectors. Features: Makes installation of your new fan a breeze Designed to safely integrate with OEM wiring Feature a waterproof 10/40 amp relay with printed wires for easy installation Kit features a 3/8” NPT thermos-switch and a 3/8” to ½” NPT adapter Harness is designed for 12V systems only
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    Spal Universal 16" Low Profile Electric Fan
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    Spal - Corporate Logo
    T#:583648
    Part#: 30100400
    In Stock
    $ 111.99 USD
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    $ 111.99 USD
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    Low profile design makes an easy fit when clearance is an issue. 1300 CFM.

    Genuine BMW Manual Transmission Crossmember
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    Genuine BMW - Corporate Logo
    T#:49465
    Part#: 22316760531
    Ships on Nov 27, 2026
    78% off MSRP $ 263.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 58.99 USD
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    78% off MSRP
    $ 263.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 58.99 USD
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    Genuine BMW Gearbox Support
    This item fits the following BMW Chassis:
    E85 Z4M,E46,E85 Z4,E86 Z4


    Bavarian Autosport Water Pipe - E46 E39 Z4 Z3 (M52TU, M54)
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    Bavarian Autosport - Corporate Logo
    T#:638085
    Part#: 11537502525
    In Stock
    Sale - Save 20% $ 50.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 40.79 USD
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    This plastic water pipe is positioned directly underneath your intake manifold. Due to its plastic construction, it is notorious for catastrophic failure. Rapid cooling loss and overheating are both direct results of this failure, posing permanent and lasting damage to the engine.

    Replace your cracked/broken coolant pipe with this high-quality Bavarian Autosport component to ensure long-term reliability and perfect fitment.

    From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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    Powerflex Street Offset Lower Radiator Mounts
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    Powerflex - Corporate Logo
    T#:21637255
    Part#: PFF5-4652
    In Stock
    $ 42.99 USD
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    Powerflex Offset Lower Radiator Mounts for BMW E30, E36, E46, Z3, and Z4 offer a comprehensive range of benefits, including heightened cooling efficiency, precise radiator alignment, extended durability, noise reduction, compatibility with BMW models, and suitability for performance-oriented driving scenarios. These mounts are the preferred choice for BMW owners seeking to enhance their vehicle's cooling system performance, whether for daily driving or high-performance applications. Powerflex Offset Lower Radiator Mounts for BMW bring a host of advantages, encompassing: Enhanced Cooling Efficiency: Engineered for improved radiator positioning, these mounts enhance airflow, resulting in superior cooling performance. This ensures that the engine maintains an optimal temperature, reducing the risk of overheating during extended use or demanding conditions. Precise Radiator Alignment: These mounts offer precise radiator alignment, securing it firmly in place. This precision minimizes the potential for vibrations or alignment issues that could lead to leaks or inefficient cooling. Improved Durability and Longevity: Powerflex Offset Lower Radiator Mounts are meticulously crafted using durable polyurethane and high-quality materials. This robust construction enhances the mounts' lifespan, ensuring they can withstand the rigors of daily driving and challenging environments. Reduction in Vibrations and Noise: The secure and stable mounting provided by these mounts effectively reduces vibrations and noise stemming from radiator movement. This leads to a quieter and smoother driving experience without compromising cooling efficiency. BMW Model Compatibility: Designed exclusively for BMW vehicles, these mounts seamlessly and effectively integrate with your vehicle. They cater to the needs of BMW enthusiasts seeking to augment cooling performance and preserve their vehicle's reliability. Ideal for Performance Enthusiasts: Powerflex Offset Lower Radiator Mounts hold particular appeal for performance enthusiasts. They present an effective solution for optimizing cooling in high-performance BMW models, ensuring consistent engine performance during spirited drives or track sessions.
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    OEM Pierburg Water Pump - 128i, 325i/328i/330i, 525i/528i/530i, X3, X...
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    Pierburg - Corporate Logo
    T#:348906
    Part#: 11517586925
    In Stock
    $ 365.99 USD
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    $ 365.99 USD
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    Don't take your car's cooling system for granted. A waterpump failure can cost you an engine, which is why preventatively replacing your BMWs waterpump and refreshing the cooling system every 60,000 miles. The water pump is a weak point is the cooling system. Replacing your waterpump will go a long way for keeping your car on the road and operating properly. This water pump fits many 2006 and newer BMW 6 cylinder engines, specifically all the BMWs with the N51, N52, N53 engines. You will also need to purchase replacement aluminum screws Part #11510392553 

    Pierburg pumps are some of the most trusted and widely used on the market. From fuel, water, air and vacuum Pierburg has you covered with OE quality and reliable performance year after year.

    This water pump fits the following BMWs:
    2008-20xx E82 128i
    2006-2006 E90 325i sedan, 330i sedan, 325xi sedan, 330xi sedan
    2007-2012 E90 328i sedan, 328xi sedan, 328i xDrive sedan
    2007-2012 E92 328i coupe, 328xi coupe, 328i xDrive coupe
    2007-2012 E93 328i Convertible
    2006-2006 E60 525i, 525xi, 530i, 530xi
    2007-2010 E60 528i, 528xi, 528i xDrive
    2007-2010 E83 X3 3.0i X3 3.0si
    2007-20xx E70 X5 3.0si X5 xDrive30i 
    2006-2008 E85 Z4 3.0si
    2009-20xx E89 Z4 sDrive30i

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    CSF OE Style Radiator - E85/86 Z4 M, E46 Non-M (Automatic Transmissio...
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    2X Entries For Our G87 M2 Sweepstakes!
    CSF - Corporate Logo
    T#:582698
    Part#: 3709
    In Stock
    $ 110.99 USD
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    This is a factory original style radiator from CSF and will fit perfectly into the stock location. Cooling will be identical to what your car came with originally. A great replacement with all the proper connections and in all of the proper locations.
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    Hepu New Water Pump - With O-Ring - E34, E36, E39, E46, E53, E60, E83...
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    Hepu - Corporate Logo
    T#:369443
    Part#: 11517527910
    In Stock
    $ 65.99 USD
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    Due to high failure rate on BMW water pumps, we recommend replacement every 60,000 mile interval. Hepu's replacement water pump 11517527910 features a durable metal impeller, while the more expensive Genuine BMW utilizes a high failure plastic impeller.
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    BMW M52 M54 Water Pipe
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    Rein - Corporate Logo
    T#:594294
    Part#: 11537502525
    In Stock
    $ 55.99 USD
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    BMW M52 M54 Water Pipe is an essential replacement part designed to ensure long-term reliability and optimal performance for your BMW's cooling system. Engineered to replace cracked or broken coolant pipes, this high-quality water pipe from Turner Motorsport guarantees a perfect fit and dependable service. Investing in this replacement pipe helps prevent overheating and potential engine damage, maintaining your vehicle's performance and longevity.

    • Reliable replacement: Designed to replace cracked or broken coolant pipes for improved engine cooling.
    • Optimal fitment: Engineered to ensure a perfect fit and seamless installation.
    • Durable construction: Built with high-quality materials to withstand engine temperatures and environmental conditions.
    • Preventative maintenance: Helps avoid overheating and potential engine damage by ensuring a reliable coolant flow.
    • Vehicle compatibility: Specifically designed for BMW M52 and M54 engine models.

    Upgrade your BMW’s cooling system with the BMW M52 M54 Water Pipe from Turner Motorsport for enhanced reliability and performance.

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    BMW E8X E9X Billet Aluminum Radiator Drain Plug
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    ECS - Corporate Logo
    T#:367075
    Part#: 013197ECS01A
    In Stock
    Sale - Save 40% $ 46.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 28.19 USD
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    Ensure your BMW's cooling system stays in top shape with ECS Tuning's Billet Aluminum Radiator Drain Plug. Designed specifically for late-model 1-Series and 3-Series BMWs, this replacement plug addresses the common issue of weak plastic drain plugs. Constant exposure to engine heat and road debris makes the plastic plugs brittle, leading to frustration with broken plugs. ECS Tuning's billet aluminum alternative puts an end to these problems.

    • Durable Replacement: Say goodbye to weak plastic drain plugs.
    • Enhanced Material: Billet aluminum provides superior strength and longevity.
    • Deeper Screw Head: Accommodates Phillips head or flat head screwdrivers for better engagement.
    • Reduced Stripping Risk: Minimize the chance of stripping out the screw head.

    Don't let cooling system maintenance be a hassle. Order ECS Tuning's Billet Aluminum Radiator Drain Plug now and experience worry-free service.

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    E46 M3, Z4M ECS Tuning Aluminum Water Pump Pulley
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    ECS - Corporate Logo
    T#:367060
    Part#: 002778ECS01
    Ships on Oct 21, 2026
    Sale - Save 10% $ 98.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 89.09 USD
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    Most of the pulleys on your BMW engine are plastic, which become brittle and frail over time and from engine bay heat. A failed pulley could leave you stranded which is why it is vital to inspect the pulleys during routine maintenance. This is an aluminum version of the stock water pump pulley used on the S54 engine in the E46 M3, MZ3, and Z4M. It's the same size and uses the same hardware and the original belt as the stock plastic pulley. But the aluminum will last much longer.
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    ECS Silicone Radiator Hoses - N52
    For Vehicles With Engine Code N52B30 (Non-SULEV w/o Auxiliary Heating)
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    ECS - Corporate Logo
    T#:37723492
    Part#: 008641LA03
    In Stock
    Sale - Save 3% $ 127.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 124.15 USD
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    Tired of dealing with brittle, dry-rotted rubber hoses? Whether you're refreshing your cooling system or replacing aging components, this ECS Silicone Radiator Coolant Hose Set is the ultimate upgrade. Designed for durability, performance, and a factory-perfect fit, these premium silicone hoses outperform standard rubber in every way.

    Why Choose Silicone Over Rubber?

    Made from heavy-duty, reinforced 4-ply fluorosilicone, ECS hoses withstand extreme temperatures and pressures far beyond OEM rubber hoses. Engineered to resist oil, fuel, and electrochemical degradation, these hoses are tested for continuous operation at 250°F and over 45 psi, delivering superior reliability, reduced turbulence, and improved coolant flow.

    Key Benefits:

    Direct OE Fitment – Perfectly molded to factory specifications for seamless installation. Enhanced Durability – Heat-resistant silicone prevents cracking, swelling, and deterioration over time. Superior Cooling Performance – Smoother internal passageways improve coolant flow and system efficiency. Pre-Installed Quick-Connect Fittings – Hassle-free installation with OEM-style connectors. Premium Hardware Included – Comes with German-style stainless steel worm-drive hose clamps for a secure fit. Kit Includes:

    Upper Radiator Hose Lower Radiator Hose Pre-Installed Factory "Quick-Connect" Flanges (4) Stainless Steel Worm-Drive Hose Clamps (4) Replaces OEM Part Numbers: 17127531579 & 17127564478

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    Heater Inlet Pipe
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    Rein - Corporate Logo
    T#:594330
    Part#: 11531705210
    In Stock
    $ 40.99 USD
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    This is the plastic heater inlet pipe that connects the cylinder head to the heater inlet on cars with the M52 or M54 engine.The plastic on this hose becomes brittle over time and eventually leads to failure.
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