88-3980 Fuel Cap Fit for Toro Tractors, Lawn Mowers Commercial Mowers and Z-Master Time Cutter

What It Is

This is a genuine Toro OEM fuel cap (part #88-3980) designed to seal the fuel tank on select Toro tractors, zero-turn mowers, and commercial mowers. It prevents fuel spillage, debris ingress, and vapor loss during operation and storage.

Fitment & Compatibility

Before buying, verify your mower model number—this cap fits Toro TimeCutter, Z-Master, Commercial 3000/4000/5000 series, and certain Toro tractor models (e.g., LX420, LX460). It does not fit all Toro mowers; check your owner’s manual or existing cap for the part number 88-3980. The cap measures approximately 2.25 inches in diameter with a standard threaded neck—measure your tank opening to confirm. This is an OEM part, not an aftermarket substitute, so fitment is exact for listed models. Avoid using on non-Toro brands or older Toro models with different cap designs.

Key Things to Know

• Quality: Genuine Toro plastic construction with a rubber gasket that seals tightly. No leaks reported.
• Installation: Takes 10 seconds—just twist off old cap, twist on new one. No tools needed.
• Common gotcha: The cap can be cross-threaded if forced; hand-tighten only until snug.
• Compatibility trap: This cap will not fit Toro Recycler or Super Recycler walk-behind mowers—those use a different cap design (often vented vs. non-vented).

Should You Buy It

If you own a compatible Toro zero-turn (TimeCutter, Z-Master) or tractor and need a direct OEM replacement, this cap is a no-brainer at $14.59. It’s cheap, fits perfectly, and the high rating reflects zero hassle. Skip it if you have a different Toro model or want a cheaper aftermarket cap—stick with OEM for fuel system seals.