125-112 Fuel Cap 7" For Toro wheel horse, 106945 1704366 1704366SM

What It Is

The 125-112 Fuel Cap is a 7-inch diameter replacement cap designed for Toro Wheel Horse and other select lawn tractors. It seals the fuel tank to prevent leaks, debris ingress, and vapor loss during operation or storage.

Fitment & Compatibility

Before buying, verify your mower’s model and fuel tank neck diameter (7 inches). This cap replaces OEM part numbers 106945, 1704366, and 1704366SM. It fits Toro Wheel Horse models including 518, 520, 618, 620, 712, and 714 series. It also works on some older Toro commercial and residential tractors with the same tank opening. Check your owner’s manual or measure the tank neck (outer diameter) – if it’s 7 inches, this cap should fit. Not compatible with standard 3-inch caps used on push mowers.

Key Things to Know

• Quality: OEM-style replacement with a rubber gasket that seals well against fuel vapors and dust. Rated 4.5/5 stars across 24 reviews; most users report a snug, leak-free fit.
• Installation: Simple – unscrew the old cap, screw on the new one by hand. No tools required. Takes about 30 seconds.
• Common Gotcha: Ensure the gasket is seated evenly before tightening. Over-tightening can crack the plastic or distort the seal. If the cap feels loose after installation, the tank neck may be worn or damaged.
• Venting: This cap is vented to allow air into the tank as fuel is consumed. If your machine stalls or runs lean after replacement, check that the vent isn’t clogged (blow through the cap to test).

Should You Buy It

If you need a direct-fit, reliable replacement for a Toro Wheel Horse or compatible tractor with a 7-inch fuel tank opening, this cap is a solid choice. It’s affordable, easy to install, and backed by good user feedback. Not for older or non-standard tank sizes – measure first.