Gas Caps
A gas cap does more than keep fuel in the tank. On a snowmobile or ATV it is also the vent that lets air in as fuel goes out, and on many sleds it carries the fuel gauge. Pick the wrong one and you get a tank that won't draw fuel, a gauge that reads empty, or a cap that leaks on its side in the trailer.
Start with the tank opening. Threaded caps and snap-in caps are not interchangeable, so match the style your tank uses, then match the diameter — the Kelch caps here are listed by gauge length (9.25", 10.25", 11.5", 13.50") because the float arm has to reach the bottom of your tank to read correctly. Check your OEM part number against the fitment on the product page before ordering. Next, decide vented or non-vented: tanks without a separate vent line need a vented cap; tanks with a vent line usually take a non-vented cap.
For Yamaha, Polaris, Ski-Doo and Arctic Cat sleds and quads, SPI gas caps are direct OEM-style replacements. Bronco fuel tank and gauge caps cover popular ATVs. For dirt bikes and MX tanks, Psychic gas caps come in black and red. Caps are small, so add a fuel petcock or tank accessory to the same order if you need one. Free shipping on orders $50+ (Lower 48).
Not sure which cap fits? Read our guide to vented vs non-vented gas caps and how to measure for a fuel gauge cap.
