DeatschWerks 9-421S-1007 DW420 420 LPH In-Tank Fuel Pump for 06-11 Honda Civic

Vehicle Fitment

• 2006-2011 Honda Civic (DX/EX/EX-L/GX/Hybrid/Hybrid-L/LX/LX-S/Mugen Si) - 1.8L/2.0L FWD (Excludes standard Si)

Features

• High-flow DW420 pump flows 420 L/hr @40 psi
• Direct drop-in 39 mm in-tank fitment
• Ethanol (E85) compatible internal components
• Comes with vehicle-specific install kit (PN 9-1007)
• Compact design ensures OEM fitment depth
• Pulsation-reducing voltage-stable operation
• Includes wiring harness pigtail for easy plug-in
• Corrosion-resistant housing and connectors

Specifications

• Flow rate: 420 L/hr @40 psi
• Fitment: 39 mm OEM-style in-tank
• Voltage: Designed for 12 V systems (<5% variance)
• Weight: approx. 2.0 lb

Included Components

• 1x DW420 high-flow in-tank pump
• 1x vehicle-specific install kit (9-1007): hoses, clamps, fittings
• 1x wiring harness pigtail
• 1x installation instructions

Product Description

The DeatschWerks DW420 (PN 9-421S-1007) is a direct-fit, high-flow upgrade for 8th-generation (2006-2011) Honda Civics (excluding base Si models). Boasting 420 LPH at 40 psi, it supports moderate to high horsepower builds - including E85 or forced induction setups - without requiring additional modifications to the fuel tank or pump hanger. Installation is straightforward thanks to the included 9-1007 kit with hoses, clamps, and detailed instructions.

This pump delivers a factory-style 0.0" - exact OEM depth - install so no tank trimming is needed. It's built to handle ethanol blends and resists pulsation and pressure drop even under high demand. Perfect for enthusiasts upgrading cam, heads, ECU, or forced-induction conversion, it ensures stable fuel delivery. Fitment confirmed across Civic DX, EX, EX-L, GX, Hybrid, Hybrid-L, LX, LX-S, and Mugen Si trims with 1.8L/2.0L FWD configurations. Confirmed up to 2011; production for 2012+ not applicable.

**Note:** Not CARB-legal - cannot be sold for street use in California. For peak performance, pair with DW HD hardwire kit (PN FPHWK-10-HD) to minimize voltage drop.