DeatschWerks 9-437-1009 DW430C 430LPH In-Tank Fuel Pump for 2001-2015 Civic / RS

Vehicle Fitment

• 2002-2006 Acura RSX (I4)
• 2001-2005 Honda Civic (I4)
• 2006-2015 Mazda MX-5 / Miata (I4)

Fitment Notes

• Designed as direct in-tank replacement in the fuel system for listed models. No major modifications required.
• Not CARB-legal. Cannot be used in CARB regulated jurisdictions. 
• Ensure compatible fuel pressures and correct electrical supply for the increased flow.

Features

• High flow rate: **430 LPH**, enabling more fuel for higher horsepower / performance demands. 
• Compact DW430C body to fit inside OEM in-tank housing. }
• Reliable materials and construction for durability under continuous use. 
• Ethanol / blended fuel compatibility (depending on local fuel blend and seals). 
• OEM-style electrical connectors to simplify installation. 
• Supports performance builds / upgraded tuning where stock fuel pumps may be insufficient. 
• DeatschWerks quality and engineering standards. 
• Good value relative to flows in this category. 

Specifications

• Part Number: 9-437-1009 (DW430C) 
• Flow Rate: ~ 430 Liters per Hour (LPH) 
• Fuel Type Compatibility: Gasoline; may support ethanol blends depending on local fuel blend and component compatibility. 
• Installation: In-tank, compact / OEM style drop-in. 
• Electrical: Match factory pump wiring and relay to handle increased current draw. (Verify battery / wiring condition).
• Legal / Emissions: Not CARB-legal in CARB jurisdictions.

Included Components

• 1x DW430C Fuel Pump - Part # 9-437-1009

Product Description

The DeatschWerks 9-437-1009 (DW430C) is a performance in-tank fuel pump crafted to meet the demands of sport compact enthusiasts driving Honda, Acura, or Mazda with stock or lightly modified setups. With a 430 LPH flow rate, this pump is a strong upgrade over many OEM fuel pumps, helping to prevent lean conditions under high load, higher RPM, or with other performance modifications.

Installed as a drop-in replacement into the factory fuel module, it retains the OEM fitment profile while delivering enhanced fuel delivery. Its compact design, reliable build, and compatible connections make it suited for RSX, Civic, and MX-5 / Miata owners wanting more fueling headroom without extensive fuel system rework. Just be sure your electrical supply, fuel lines, and pump relay are up to spec, and recognize that this product is not legal in CARB-regulated states.