Fuel Pump

The BMW E31 Fuel Pump is a complete, high-quality fuel pump assembly designed for the BMW E31 850i, 850ci, and 850CSI models with M70 and S70 engines (1990-1997). Positioned beneath the passenger rear seat, this assembly includes a top rubber seal and incorporates several key upgrades to correct common issues with the original design.

The primary issue with the original BMW fuel pump assembly was fuel leakage, particularly from the mold parting line located at the top of the unit. Over time, micro cracks formed, resulting in fuel seepage. The newly designed fuel pump assembly eliminates this issue by reinforcing the top cap for a more durable, crack-resistant structure.

Additionally, the original plastic preformed fuel lines have been replaced with high-quality, high-pressure PTFE corrugated fuel lines, making the system more resistant to modern fuels like E10 and ethanol. These new lines provide superior performance by preventing pressure leaks that were common with the older design.

For improved safety and longevity, the wiring has been upgraded to military-grade PTFE insulation, which is highly resistant to fuel and will not degrade over time. The fuel pump motors have also been redesigned, now using carbon commutators instead of copper ones. These carbon motors are quieter, more durable, and last up to three times longer than the original copper commutator motors, providing a reliable and efficient fuel delivery system.

Lastly, the fuel level sensor has been re-engineered with modern components for better precision and durability, ensuring a more reliable fuel gauge.

• Eliminates fuel leaks caused by cracks in the original design
• High-pressure PTFE fuel lines for enhanced durability and resistance to modern fuels
• Military-grade PTFE insulated wiring for greater longevity
• Upgraded carbon commutator fuel pump motors for quieter operation and longer life
• New pump motors deliver 150 LPH, offering improved fuel delivery over the original 110 LPH
• Re-engineered fuel level sensor for better accuracy
• Plug-and-play installation with all necessary components for a seamless fit

The DW65v bridges the gap for a fuel pump that seamlessly fits like stock while delivering the necessary flow capacity to support the potent power capabilities of the 1.8t engine. Prior solutions were limited to pumps with power restrictions or complex installations.

Part of the esteemed DW65 pump series, which includes the DW65c and DW65a, the "v" version boasts an impressive 265lph flow rate, making it capable of supporting up to 500hp. The DW65 series is renowned for its specialty fitment, ensuring a 100% drop-in fit for applications that deviate from standard fuel pump sizing. The DW65v maintains the factory pump's pickup points and utilizes a system mirroring stock configurations to ensure consistent fuel levels, effectively eliminating fuel starvation concerns during low fuel conditions or high-speed cornering. Additionally, all DeatschWerks fuel pumps are accompanied by an industry-leading 3-year warranty.

Key Features:

• Effortless drop-in fit
• Power support for up to 500hp
• Impressive 265 LPH flow rate, outperforming the TT225 by 40%
• Resolves fuel starvation issues often associated with high-flow pumps
• No additional wiring required; the connector matches the factory setup
• Benefit from a 3-year no-fault warranty
• Operates with a quiet and reliable turbine impeller

Compatible with 2002-2008 MINI Cooper S/JCW Supercharged Engines.