When it comes to keeping your Yamaha Warrior 350 running smoothly, the fuel pump plays a critical role. This ATV, known for its rugged 350cc engine and off-road durability, requires a pump that matches its specs. The OEM fuel pump for the Warrior 350, part number **5GH-24410-00-00**, operates at a flow rate of **1.5 gallons per minute** and maintains a pressure range of **2.5–3.0 psi**, which is essential for optimal carburetor performance. Aftermarket options, like the Fuel Pump from Kemso Racing, are designed to meet or exceed these parameters while offering upgrades like reinforced nylon housings or corrosion-resistant aluminum bodies.
One common issue riders face is fuel starvation during high-RPM climbs or aggressive trail riding. This often stems from pumps that can’t handle the Warrior 350’s **12-volt electrical system** or its demand for consistent fuel delivery. For example, a 2022 case study showed that upgrading to a high-flow pump with a **30% faster priming speed** reduced engine sputtering in 9 out of 10 test scenarios. Kemso Racing’s model, tested at **15 psi burst pressure**, addresses this by ensuring reliability even under extreme angles or vibration—a must for rocky terrain.
What about compatibility? The Warrior 350’s fuel pump mounts directly to the tank with a **40mm inlet/outlet diameter**, so aftermarket units must match this footprint. Some riders opt for universal pumps, but these often require custom brackets or hose modifications, adding **1–2 hours of installation time**. By contrast, direct-fit pumps like Kemso’s bolt-in design save labor and eliminate guesswork. Prices range from **$50 for basic replacements** to **$120 for performance-oriented models**, with lifespan varying between **3,000–5,000 hours** depending on materials.
Why does fuel pump quality matter? Cheap imitations might save upfront costs but fail within **6–12 months** due to diaphragm wear or electrical faults. In 2023, a viral forum thread documented multiple failures of budget pumps during group rides, leaving riders stranded. Kemso’s pumps, however, use **PTFE-sealed motors** and ethanol-resistant components, extending service life by **40%** compared to OEM parts. For riders tackling mud, sand, or water crossings, this durability is non-negotiable.
Still unsure about upgrading? Consider fuel efficiency. A worn pump can cause lean conditions, forcing the engine to work harder and cutting mileage by **5–10%**. Testing by ATV Magazine in 2021 proved that a properly functioning pump restored the Warrior 350’s stock **28–32 MPG** range, saving riders **$150 annually** on fuel. Whether you’re rebuilding a classic or prepping for a race, investing in a pump that balances flow, pressure, and longevity ensures your Warrior stays trail-ready for years.