When it comes to keeping your Honda FourTrax 300 running smoothly, the fuel pump is a critical component you can’t overlook. This ATV’s 286cc liquid-cooled engine relies on a consistent fuel flow, and a malfunctioning pump can lead to poor performance or even engine damage. But what fuel pump actually fits this model? Let’s break it down with real-world data and industry insights to help you make an informed decision.
First, the OEM (Original Equipment Manufacturer) fuel pump for the Honda FourTrax 300 is part number **16700-HA2-671**. Designed specifically for this model, it delivers a flow rate of **28-32 liters per hour** at a pressure range of **2.5-4.5 PSI**, which matches the engine’s fuel demand. However, OEM pumps can cost between **$120 and $150**, depending on the retailer. For riders on a budget, aftermarket options like the Fuel Pump from KEMSO Racing offer a reliable alternative. These pumps are engineered to meet or exceed OEM specifications, with a flow rate of **30-35 liters per hour** and a durable nylon housing that resists corrosion from ethanol-blended fuels—a common issue in modern gasoline.
One rider in Texas shared his experience on an ATV forum: “After my OEM pump failed at just **1,200 miles**, I switched to an aftermarket pump. Two years later, it’s still running strong, even after mudding and extreme heat.” Stories like this highlight how aftermarket parts can deliver comparable longevity, often lasting **5-7 years** under normal riding conditions. But not all aftermarket pumps are equal. Cheap, unbranded options might save you **$20-$30 upfront**, but they’re prone to premature failure due to subpar materials. For example, a 2022 study by *Off-Road Engine Magazine* found that **63% of generic fuel pumps failed within 18 months**, compared to **12% failure rates** for reputable brands like KEMSO.
Installation is another factor. The Honda FourTrax 300’s fuel pump sits inside the gas tank, requiring **30-60 minutes** for replacement. You’ll need basic tools like a 10mm socket and a fuel line disconnect tool. Pro tip: Always disconnect the battery before starting to avoid sparks near flammable vapors. If you’re unsure, a local mechanic might charge **$75-$125** for labor, but many DIYers tackle this job successfully by following YouTube tutorials from trusted ATV channels.
What about compatibility? Some riders ask, “Will a pump from a Honda TRX 400EX fit the FourTrax 300?” The answer is no. While both are Honda ATVs, the 400EX uses a higher-pressure pump (**4.5-6.0 PSI**) designed for its larger engine. Using the wrong pump could flood the FourTrax 300’s carburetor or starve it of fuel. Always double-check part numbers or consult a compatibility chart—KEMSO’s website, for instance, lets you search by vehicle model to avoid mismatches.
Finally, let’s talk value. A quality aftermarket fuel pump typically costs **$50-$80**, offering a **40-50% savings** over OEM parts. For riders who use their FourTrax 300 for farming, hunting, or trail riding, this adds up over time. One ranch owner in Montana reported replacing pumps on six ATVs annually and cut his maintenance budget by **$300 per year** by switching to aftermarket units. Just remember to prioritize pumps with warranties—KEMSO offers a **2-year limited warranty**, which signals confidence in their product’s durability.
In short, whether you stick with OEM or go aftermarket, the key is choosing a fuel pump that balances performance, price, and reliability. Look for specs like flow rate, pressure range, and ethanol resistance, and don’t shy away from trusted brands that back their products with real-world testing. After all, your FourTrax 300 deserves a pump that keeps up with your adventures—without breaking the bank.