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The DeatschWerks DW X2 Fuel Pump Module Kit (Part #9-421-7022) is a complete, high-flow dual-pump surge tank solution engineered specifically for the 1994–2002 Nissan Silvia (S14/S15) and Skyline (R33/R34). Designed for serious performance builds that demand reliable, high-volume fuel delivery, this kit pairs twin DW420 in-tank pumps with a purpose-built surge module to eliminate fuel starvation under hard cornering, aggressive acceleration, and high-boost conditions. Whether you're running a high-horsepower SR20DET or RB26DETT build, the DW X2 Module Kit is the definitive fuel system upgrade for track, drift, and street performance.
| Manufacturer Part Number | 9-421-7022 |
|---|---|
| SKU | DWK9-421-7022 |
| UPC | 887753545855 |
| Brand | DeatschWerks |
| Pump Model | DW420 (x2) |
| Flow Rate (Each Pump) | 420 lph @ 40 PSI (pump gas); ~320 lph @ 40 PSI (E85) |
| Combined Flow Rate | 840 lph @ 40 PSI (pump gas) |
| Estimated HP Support | 1,000+ WHP (E85); 1,300+ WHP (gasoline) |
| Fuel Compatibility | Gasoline, E85, Ethanol blends |
| Configuration | Dual-Pump X2 Surge Module |
| Installation Type | Direct-Fit Drop-In (vehicle-specific) |
| Inlet / Outlet | Refer to installation instructions for port sizing |
This DeatschWerks X2 Fuel Pump Module Kit is a direct-fit solution for the following vehicles:
Compatible with SR20DET, RB20DET, RB25DET, RB26DETT, and other engine configurations in these platforms. If you are unsure whether this kit fits your specific build or fuel tank configuration, please verify your chassis code and consult the DeatschWerks fitment guide before ordering.
The DW X2 Fuel Pump Module Kit is designed as a direct drop-in replacement for the OEM fuel pump assembly, significantly reducing installation complexity compared to universal surge tank setups. The included hardware kit provides all necessary fittings and connectors for a complete installation. While this is a bolt-in application, DeatschWerks recommends installation by a qualified automotive technician or experienced performance shop familiar with fuel system modifications. Always follow proper fuel system safety procedures — depressurize the fuel system, work in a well-ventilated area, and disconnect the battery before beginning installation.
Is this fuel pump kit compatible with E85? Yes — the DW420 pumps and all wetted components in the X2 module are fully compatible with E85 and ethanol-blended fuels, making this kit an excellent choice for flex-fuel and dedicated E85 performance builds.
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