DW300 Fuel Pump for Honda S2000: Install Tips

By DeatschWerks | Published: 2026-10-23

Category: How-to Guides

Step-by-step guide to install the DW300 fuel pump in your Honda S2000, including wiring, safety checks, and common mistakes to avoid.

Quick Answer

For a reliable Honda S2000 fuel pump upgrade, the DeatschWerks DW300 is a direct-fit option that flows 340lph and includes an install kit. Follow the steps below to replace your stock pump safely and avoid common wiring mistakes.

Why Choose the DW300 for Your S2000

The DW300 is a 340lph in-tank electric fuel pump designed specifically for the Honda S2000. Its vehicle-specific fitment means it drops into the factory assembly without modification, and the included install kit saves you from sourcing extra parts.

If you're planning to add forced induction or upgrade your fuel system, the DW300 provides the flow headroom you'll need. However, it's not a plug-and-play unit for all applications—always verify compatibility with your year and model before starting.

Safety First: Fuel System Precautions

Working with fuel requires care. Relieve fuel pressure before disconnecting lines, work in a well-ventilated area, and keep a fire extinguisher nearby. Disconnect the battery negative terminal to prevent sparks.

The DW300 is an in-tank pump, so you'll be opening the fuel tank. Make sure the tank is as empty as possible to reduce weight and spill risk.

Installation Steps

Prepare the Vehicle: Disconnect the battery negative terminal, relieve fuel system pressure by removing the fuel pump fuse and running the engine until it stalls, and open the fuel filler cap to vent tank pressure. Never skip pressure relief; it prevents fuel spray and fire risk.
Access the Fuel Pump: Remove the rear trunk liner or access panel to reach the fuel pump module. Disconnect the electrical connector and fuel lines, then unbolt the module from the tank. Take a photo of the module before removal to remember the orientation of lines and wiring.
Remove the Stock Pump: Carefully lift the module out of the tank and separate the pump from the assembly. Note the orientation of the pump and the wiring harness. Keep the module clean; any debris can clog the new pump.
Install the DW300: Place the DW300 into the module, ensuring it sits correctly and the wiring matches the stock connector. Use the included install kit to secure any adapters or hoses. Double-check the pump's orientation; a reversed pump can cause poor fuel delivery.
Reassemble and Test: Reinstall the module, reconnect fuel lines and electrical connectors, and reattach the battery. Turn the ignition to ON (without starting) to prime the pump, then check for leaks. Listen for the pump's whine; if it's silent, check the wiring and fuse.

Product Facts

DW300 Fuel pump for Honda S2000: The DeatschWerks DW300 is a 340lph in-tank electric fuel pump with vehicle-specific fitment for the Honda S2000 and includes an install kit. This means it's a direct replacement for the stock pump, saving you time on fitment and giving you enough flow for high-horsepower builds.
DW300 Fuel pump for Honda S2000