Fuel Gas Cap Replacement AUC12860 GX23465 AUC18428 951-12182 125-1847, Compatible with John Deere, Cub Cadet, Troy-Bilt, MTD, Toro, Exmark Lawn Mowers & Tractors

What It Is

This is a universal replacement fuel gas cap designed to fit a wide range of lawn mowers and tractors from brands like John Deere, Cub Cadet, Troy-Bilt, MTD, Toro, and Exmark. It replaces OEM part numbers AUC12860, GX23465, AUC18428, 951-12182, and 125-1847, and is used to seal the fuel tank and prevent leaks or debris entry.

Fitment & Compatibility

Before buying, check your mower’s fuel tank cap opening diameter—this cap fits standard 1.5-inch to 2-inch openings, but measure yours to be sure. Verify your engine or mower model against the OEM part numbers listed (AUC12860, GX23465, etc.). This cap fits most walk-behind mowers, riding tractors, and zero-turn mowers from the compatible brands, but it may not work on older or proprietary tank designs. Avoid assuming brand name alone guarantees fit—always cross-reference with your specific model number.

Key Things to Know

• Quality: Aftermarket cap, not OEM. It’s a simple plastic part with a rubber gasket—should last a few seasons if not over-tightened.
• Installation: Tool-free, hand-tighten only. Over-tightening can crack the cap or damage the gasket.
• Common gotcha: The cap may feel loose on some tanks—check the gasket seals properly before filling fuel. If it leaks, the gasket may need replacement or the cap may not be compatible.
• Price vs. OEM: At $9.49, it’s cheaper than most OEM caps ($15–$25), but if exact fit is critical (e.g., for emission compliance), stick with OEM.

Should You Buy It

If you need a quick, affordable replacement for a lost or broken cap and your mower’s tank opening matches standard sizes, this is a solid value. But if you require an exact OEM fit or have a specialized tank design, spend the extra for the brand-specific cap to avoid leaks.