DeatschWerks 9-401-7041 DW400 Fuel Pump Module for 2006-2011 Honda Civic Si

Vehicle Fitment

• 2006-2011 Honda Civic Si Coupe (FG2, K20Z3 2.0L I4, FWD)
• 2007-2011 Honda Civic Si Sedan (FA5, K20Z3 2.0L I4, FWD)

Fitment Notes

• In-tank fuel pump module; installs in the OE tank location
• For high-flow builds; verify fuel system (return/returnless) configuration before install
• Compatible with gasoline and E85 blends
• Professional installation and post-install fuel pressure verification recommended

Features

• High-flow DW400-series turbine impeller design for stable delivery at elevated pressure
• E85-capable construction for ethanol-blend fuels
• Designed to support substantially higher horsepower than stock
• Drop-in style module tailored to the Civic Si platform
• Reduced noise/vibration characteristics vs. many high-output pumps
• Internal check-valve architecture for consistent hot restarts
• Electrical connector/pigtail and strain relief engineered for OE-style reliability
• Durable materials compatible with modern fuels and additives

Specifications

• Part Number: 9-401-7041
• Flow Rate: ~415 L/h @ 40 psi (12 V nominal)
• Maximum System Pressure: ~120 psi (total)
• Voltage: 12 V DC
• Fuel Compatibility: Gasoline, E10-E85
• Mount Style: In-tank module (OE replacement location)
• Position: Fuel tank assembly

Included Components

• 1x In-tank fuel pump module (DW400-series)
• O-ring/gasket and required seals (as supplied)
• Electrical pigtail/connector (as supplied)
• Installation instructions

Product Description

The DeatschWerks 9-401-7041 is a high-flow, in-tank fuel pump module engineered for 2006-2011 Honda Civic Si platforms (FG2/FA5 with K20Z3). Utilizing DW's DW400 turbine architecture, it delivers significantly higher flow than stock while maintaining stable pressure and OE-like drivability. Its materials and construction are compatible with gasoline and ethanol blends (E85), making it a strong foundation for naturally aspirated or forced-induction builds.

Designed to install in the factory tank location, the module supports substantial power increases with reduced noise compared to many high-output alternatives. For best results, confirm your vehicle's fuel system configuration, use appropriate filtration and wiring, and verify base and differential fuel pressures after installation.