When it comes to keeping your Polaris RZR 800 running smoothly, the fuel pump is one component you can’t overlook. This side-by-side’s 760cc twin-cylinder engine relies on consistent fuel delivery, especially when tackling rough trails or climbing steep inclines. The stock fuel pump for the RZR 800 typically operates at a flow rate of **30 liters per hour** with a pressure range of **42-45 PSI**, which works well for casual riders. But if you’ve upgraded your machine with aftermarket turbos or high-performance injectors, you’ll need a pump that can handle increased demand without faltering.
For riders wondering, *“What specs should I prioritize?”* the answer lies in compatibility and durability. The OEM fuel pump (part number **2874377**) is a common choice, but aftermarket options like the Fuel Pump from Kemso Racing offer a **15% higher flow rate** (35 L/hr) while maintaining OEM-grade pressure stability. This makes it ideal for modified engines or extreme riding conditions. Kemso’s design also integrates a reinforced nylon housing, which reduces vibration-related wear—a known issue in off-road vehicles—extending the pump’s lifespan by **25-30%** compared to stock models.
Industry trends show a shift toward ethanol-resistant components, and for good reason. Many riders don’t realize that standard pumps can degrade faster when exposed to E10 or E15 fuels. Kemso’s fuel pump addresses this with Viton seals and stainless-steel internals, rated to handle up to **E85 ethanol blends**. This matches the durability seen in professional racing setups, like those used in the Best in the Desert series, where fuel consistency is critical for podium finishes.
Installation is another key factor. Swapping pumps shouldn’t require a mechanic’s expertise or hours of downtime. The Kemso unit retains the RZR 800’s original mounting points and electrical connectors, allowing most users to complete the job in **under 45 minutes**. One Utah-based trail rider reported swapping pumps during a lunch break before a weekend ride, noting zero hiccups even after 12 hours of hard use.
Cost-wise, OEM pumps range from **$220 to $300**, while aftermarket options like Kemso’s come in at **$149** with a **2-year warranty**. That’s a **35-50% savings** for a product that outperforms factory specs. For budget-conscious riders, this balance of price and reliability is a game-changer.
Still asking, *“Is upgrading worth it?”* Consider this: A failing fuel pump can lead to engine stalling, poor acceleration, or even piston damage—repairs that could cost **$1,500+**. Investing in a robust pump isn’t just about performance; it’s insurance against costly breakdowns. Kemso’s design has been stress-tested in environments ranging from Arizona’s dunes to Alaska’s mud trails, proving its resilience across **500+ hours** of use.
In short, whether you’re restoring an older RZR 800 or pushing your ride to its limits, the right fuel pump makes all the difference. Prioritize flow rates, ethanol compatibility, and ease of installation—and don’t shy away from upgrades that offer real-world value. After all, your machine’s reliability depends on what’s pumping beneath the surface.