If your UTV or ATV is running hot — temperature light on, coolant boiling over, heat soaking the cab — the radiator fan is the most common culprit, and you can diagnose it in your driveway in about 20 minutes with a test light and a jumper wire. This guide walks the diagnosis in order, then covers direct-fit replacement fan kits from Universal Parts for Polaris, Kawasaki, Yamaha, Arctic Cat, and more.
Not the wrenching type? Call 800-596-0785 with your symptoms and your year/make/model — we'll help you figure out what you actually need before you buy anything.
First: is it really the fan?
Overheating has four usual suspects. Check them in this order — cheapest first:
- Radiator packed with mud or chaff. The #1 cause on machines that work for a living. Rinse the core from the back side with a garden hose (not a pressure washer at close range — it folds fins) until light passes through.
- Low coolant / trapped air. Check the overflow bottle AND the radiator cap level when cold. Air pockets after any coolant work will cook a machine that's otherwise healthy.
- The fan circuit. Details below — fuse, relay, temp switch, then the fan motor itself.
- Water pump or thermostat. If coolant is full, the radiator is clean, and the fan spins when it should, you're into mechanical territory.
How to test the fan in 3 steps
- Check the fuse. Find the fan fuse in the fuse box (your owner's manual maps it). Blown fuse? Replace it — but a fuse that blows again usually means a seizing fan motor drawing too many amps.
- Jump the fan directly. Unplug the fan connector and feed the fan 12V straight from the battery with jumper leads. If the fan doesn't spin on direct power, the motor is dead — replace the fan. If it spins, the problem is upstream.
- Test the temp switch/relay. If the fan runs on direct power but never kicks on when hot, the temperature switch or fan relay isn't closing the circuit. These are inexpensive parts — but diagnose before parts-cannonning.
Direct-fit replacement fan kits
When the motor's dead, a Universal Parts kit gets you a new fan, shroud, and connector-matched wiring for your machine — all at $220.79:
- Polaris Ranger '02–'18 / RZR / Sportsman Spal fan kit — genuine Spal motor, the gold standard in aftermarket cooling
- Polaris Ranger fan kit for OEM #2411559 / #2411732 — match by your old fan's part number
- Polaris Ranger 400/500 fan kit
- Kawasaki Mule 3000/3010/3020 kit, Teryx 750 kit, Yamaha Rhino 450/660 kit, and Arctic Cat Prowler fan
Browse the whole category at Cooling Fans. Match by machine and by OEM part number when listed — some models changed fans mid-generation.
Replacing the fan: what to expect
Most UTV fan swaps are under two hours: drain a little coolant if the shroud requires it, unbolt the old fan from the radiator, transfer or connect the wiring plug, and bolt the new unit in. Refill and burp the cooling system, then verify the fan cycles on at temperature before you call it done.
Frequently asked questions
Why does my fan fuse keep blowing?
A fan motor with worn bearings draws more current as it labors — the fuse is doing its job. Replace the fan before it takes the wiring or an overheated engine with it.
Can I just wire the fan to a manual switch?
A manual override switch is a popular backup, but don't rely on memory to protect a $10,000 machine — fix the automatic circuit and keep the switch as insurance.
My machine overheats only at low speed. Fan?
Classic fan symptom. At trail speed, airflow through the radiator does the cooling; at crawl speeds the fan is everything. If it's fine at 30 mph and hot in the parking lot, test the fan circuit first.
Do fan kits ship free?
Most of what we sell ships free to the lower 48 — each product page shows its shipping terms.
Don't ride hot — overheating warps heads and cooks gaskets. Find your machine in Cooling Fans, or call 800-596-0785 and a real person in the USA will help you diagnose it before you spend a dollar.