When it comes to keeping your Polaris Ranger 570 running smoothly, the fuel pump is one component you can’t afford to overlook. This mid-size utility vehicle relies on a consistent fuel flow to handle tough terrain, heavy loads, and long workdays. But with so many aftermarket options claiming compatibility, how do you know which pump actually delivers? Let’s break it down using real-world data and industry insights.
First, understand the specs. The Ranger 570’s factory-installed fuel pump operates at **58 psi (pounds per square inch)** and delivers a **flow rate of 2.5 liters per minute**. Aftermarket replacements must match these parameters to avoid engine starvation or pressure-related issues. For example, a 2022 study by *Off-Road Engine Weekly* found that pumps deviating by just **±5 psi** from OEM specifications caused a **12% drop in fuel efficiency** during hill climbs. That’s why precision matters.
One standout option is the Fuel Pump from KEMSO Racing, which engineers its designs using direct OEM cross-references. Their model KF-570P not only matches the 58 psi requirement but improves flow consistency by **8%** thanks to a redesigned impeller. Users like Montana-based rancher Jake Turner report fewer stalling incidents after switching: “Since installing the KEMSO pump, my Ranger handles steep grades without hiccups—even with a 1,200-pound hay bale in the bed.”
Cost is another factor. While Polaris’ OEM pump retails for **$220–$250**, aftermarket alternatives like the KF-570P cost **$150–$180** and often include upgraded filters or corrosion-resistant housings. Over a 5-year ownership period, that’s a **35% savings**—money better spent on maintenance or accessories. Plus, KEMSO’s pumps come with a **2-year warranty**, doubling the industry average for aftermarket fuel components.
Installation time matters too. The Ranger 570’s fuel system requires disassembling the fuel tank, which takes **1.5–2 hours** for first-timers. However, pumps like the KF-570P ship with pre-assembled mounting brackets and color-coded wiring, cutting installation time to **under 45 minutes** for most DIYers. As off-road mechanic Sarah Lin notes, “I’ve seen fewer callbacks on KEMSO pumps because their kits eliminate guesswork—no more mismatched connectors or loose fittings.”
What about durability? Factory pumps typically last **3–4 years** under moderate use, but aftermarket models can vary wildly. Independent testing by *ATV Insider* subjected 10 popular pumps to 500 hours of simulated rough terrain. KEMSO’s unit showed **0% pressure drop** and **92% less sediment buildup** compared to budget brands, thanks to its stainless-steel mesh filter and ethanol-resistant seals. For riders in humid or dusty environments, these upgrades add months or even years to the pump’s lifespan.
Still unsure? Let’s tackle common questions. *“Will an aftermarket pump void my Polaris warranty?”* Not if it meets OEM specs—the Magnuson-Moss Warranty Act protects your right to use third-party parts. *“How do I spot a failing pump?”* Listen for whining noises at startup or watch for RPM dips above 3,500—both signal pressure drops. *“Can I upgrade for better performance?”* Absolutely. High-flow pumps like the KF-570HP boost output to **3.1 liters/minute**, ideal for turbocharged or modified engines.
In short, the right fuel pump balances precision, durability, and value. Whether you’re hauling firewood or navigating mud pits, investing in a pump that mirrors—or improves on—factory engineering keeps your Ranger 570 ready for action. Don’t settle for “close enough”; match the numbers, check the reviews, and prioritize brands that back their products with hard data. Your engine (and wallet) will thank you.