What Fuel Pump fits a Honda S2000?

If you’re a Honda S2000 owner, you already know this iconic roadster thrives on precision engineering and high-revving performance. But when it comes to maintaining or upgrading your S2000, the fuel pump is a component you can’t afford to overlook. Whether you’re troubleshooting a failing pump or planning a performance build, understanding which fuel pump fits your Honda S2000 is critical for reliability and power. First, let’s talk factory specs. The OEM fuel pump for the Honda S2000 varies slightly between model years. The AP1 (2000–2003) and AP2 (2004–2009) both use an in-tank electric fuel pump, but Honda revised part numbers over the years. The original pump for early AP1 models, for example, is part number **17040-PCX-003**, while later AP2s transitioned to **17040-PCX-A01**. These pumps are designed to deliver the precise fuel pressure (around 50–55 psi) needed for the F20C and F22C engines. If you’re replacing a worn-out unit, sticking with OEM-spec pumps ensures compatibility with the fuel system’s voltage and flow requirements. But what if you’re chasing more power? Stock S2000 fuel pumps can handle moderate upgrades, like bolt-on modifications or a tune, but they’ll struggle with forced induction or aggressive NA builds. This is where aftermarket upgrades shine. High-flow fuel pumps, such as those from Walbro or AEM, are popular choices. For instance, the Walbro 255 LPH (liter per hour) pump is a go-to for many enthusiasts. It’s a drop-in replacement for the OEM unit and supports up to 400–450 wheel horsepower, making it ideal for turbo or supercharger setups. Installation is straightforward if you’re familiar with the S2000’s fuel tank setup. You’ll need to access the pump by removing the rear trunk liner and unbolting the fuel pump assembly. Pro tip: Replace the fuel filter sock and inspect the pump’s wiring harness while you’re in there—it’s cheap insurance against future issues. Now, let’s address reliability. Honda’s OEM pumps are robust, but age and ethanol-blended fuels can take a toll. If your S2000 hesitates under hard acceleration or struggles to start, a weak fuel pump might be the culprit. Aftermarket pumps not only offer higher flow rates but often improve durability. For example, a fuel pump from Kemsor Racing includes reinforced internals and ethanol-resistant components, which is a smart choice if you’re running E85 or live in a region with subpar fuel quality. One common question: Does the fuel pump vary between US-spec and JDM models? The answer is no—Honda used the same basic design across all markets. However, aftermarket support differs. JDM-focused retailers might list pumps under alternate part numbers, but physically, they’re interchangeable. Finally, don’t overlook the importance of proper maintenance. Even the best fuel pump won’t last if the tank is contaminated or the fuel strainer is clogged. Clean your tank during pump replacements, and avoid running the car on low fuel consistently, as this can overwork the pump. In short, whether you’re keeping your S2000 stock or building a track monster, choosing the right fuel pump comes down to your goals. OEM replacements work perfectly for daily drivers, while upgraded pumps from trusted brands unlock the potential for higher performance. Just remember: Quality matters. A reliable pump ensures your S2000 keeps delivering that signature VTEC rush every time you hit 6,000 RPM.