Husqvarna 585124801 3" Fuel Cap Assembly Genuine Original Equipment Manufacturer (OEM) Part

What It Is

This is the genuine OEM fuel cap assembly for Husqvarna walk-behind mowers and zero-turn riders. It seals the fuel tank to prevent leaks and evaporation, and includes the cap, gasket, and tether.

Fitment & Compatibility

Before buying, verify your mower’s model number (found under the seat or on the frame). This cap fits many Husqvarna models from the 2010s onward, including the LC, LT, and Z series, but not all. Measure your tank opening – this cap is designed for a 3-inch neck. If your cap is cracked, missing, or doesn’t seal, this is a direct replacement. Aftermarket caps may fit but often lack the same seal quality and tether length; this OEM part guarantees proper fitment.

Key Things to Know

• Quality: Made by Husqvarna, so it matches factory specs. The gasket is integrated and durable, but can dry out over time.
• Installation: Easy – just unscrew the old cap and screw on the new one. No tools required. The tether clips onto the tank neck.
• Common Gotcha: The tether is short. If your tank is recessed, the cap may not hang freely when removed. Test fit before final tightening.
• Price vs. Value: At $18.89, it’s pricier than generic caps, but you avoid fitment issues and poor sealing that can cause fuel leaks or vapor loss.

Should You Buy It

If you have a Husqvarna mower with a 3-inch fuel neck and need a reliable, leak-proof replacement, this OEM cap is the right choice. It’s especially worth it if your old cap is warped, cracked, or the gasket is failing. For non-Husqvarna mowers or different neck sizes, look elsewhere.