GX22166 Tank Gas Cap for L100 L105 L107 L108 L110 L111 L118 L120 L130 LA125 STX38 STX46 D160 D170 2PCS

What It Is

This is a replacement fuel cap (2-pack) designed for select John Deere riding lawn mowers and lawn tractors. It seals the gas tank to prevent fuel evaporation, leaks, and debris ingress.

Fitment & Compatibility

Check your mower’s model number (e.g., L100, L110, STX38) and the OEM part number. This cap is listed for: L100, L105, L107, L108, L110, L111, L118, L120, L130, LA125, STX38, STX46, D160, D170. It is an aftermarket replacement for OEM part GX22166. Measure your tank opening diameter (typically ~1.5 inches) and verify the cap’s thread pitch matches. Not all John Deere caps are cross-compatible—some models use a different venting design. If your original cap has a vent hole or tether, compare those features.

Key Things to Know

• Quality variance: At 3.9 stars, some users report the cap fits loosely or doesn’t seal as tightly as OEM—test for fuel smell after installation.
• Easy install: No tools required—just twist on. Ensure it clicks or seats fully to avoid leaks.
• Venting check: If your mower has a vented cap, this may be non-vented. Using a non-vented cap on a vented tank can cause fuel flow issues or pressure buildup.
• 2-pack value: Good for having a spare or replacing caps on two mowers, but verify both caps match your tank before buying.

Should You Buy It

This is a budget-friendly option if you need a quick replacement for a common John Deere model and don’t mind slightly looser fit. Skip it if you want an exact OEM seal, have a less common model, or need a vented cap—spend a few dollars more for the genuine part.