DeatschWerks DW420 Fuel Pump - BMW E36 & E46 3 series

Product Details

The DeatschWerks Fuel Pump is a premium DW420 series 420LPH electric in-tank fuel pump packaged with a specialized vehicle-specific installation kit for classic BMW 3-Series models. Acting as a direct-fit upgrade over your restrictive factory unit, this high-flow pump satisfies the increased fueling demands of modern performance tuning. DeatschWerks builds these units with longevity in mind, putting every design through rigorous 1,000-hour endurance bench testing.

The lightweight composite impeller resists the corrosive qualities of alcohol-blended fuels, while Pulse Width Modulation (PWM) compatibility allows the pump to work smoothly with factory electronic systems. If you are experiencing fuel pressure drop-offs or are stepping up to a turbocharger kit, this inclusive bundle provides the reliable, high-volume fuel delivery your engine management system expects.

Key Features

• Direct Factory Replacement: Designed to drop straight into the OE fuel pump cradle of select BMW chassis without permanent fuel hat modifications.

• Rigorous Quality Testing: Every individual pump is bench flow-tested by DeatschWerks at operational pressure prior to packaging.

• PWM Compatible: Capable of working with Pulse Width Modulation electronics for precise fuel control and reduced electrical load.

• Corrosion Resistant Material: Built using premium composite and carbon internals that resist heat, high friction, and chemical wear.

• Comprehensive Kit: Includes the high-volume electric pump, specialized wiring harness, fuel strainer, and essential mounting hardware.

Specifications

• Brand: DeatschWerks

• Manufacturer Part Number: 9-421-1031

• Flow Performance: 420 Liters Per Hour

• Placement on Vehicle: Internal Fuel Tank

• Electrical Draw Configuration: Low-amperage draw, optimized at 13.5V

• Pump Housing Dimensions: Compact 39mm body diameter

• Product Weight: 1.2 lbs.

• Package Dimensions: 6.3 in. (Length) x 4.1 in. (Width) x 2.4 in. (Height)

• Inlets / Outlets: 1 Single 11mm Stock Inlet / 1 Single 5/16" Hose Barb Outlet

• Hardware Included: Fuel pump, vehicle-specific wiring pigtail, filter strainer, and hardware components

Turner Tip: Upgrading to this dual-pump kit requires a 10-gauge wiring to safely handle the high electrical draw, along with precise plumbing to retain the factory saddle-tank siphon system and prevent fuel starvation. Additional fuel line plumbing, fuel pressure regulator and ECU may be required.

Not for sale or use in the state of California on any pollution-controlled vehicle as per the California Air Resources Board.

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