GX20006 Mower Drive Belt 1/2"x 89" Fits John Deere l111 Tractor Replacement Belt John Deere d140 Transmission Drive Belt d130 John Deere Parts John Deere Drive Belt l120

What It Is

The GX20006 is an aftermarket V-belt designed as a direct replacement for the transmission drive belt on select John Deere lawn tractors. It transfers power from the engine to the transaxle, enabling forward/reverse movement.

Fitment & Compatibility

Before purchasing, verify your machine uses a 1/2" wide x 89" long belt. This belt fits John Deere L111, L120, D130, and D140 models—but only those with a 42-inch or 48-inch deck (deck size does not affect transmission belt fitment, but confirms tractor series). Also fits select L100, L110, L118, L130, D110, D125, D155, and D160 models. Cross-references OEM part numbers GX20006, GY20570, and GY21125. Always measure your existing belt length and width before ordering, as belt routing (with or without a tensioner pulley) can vary.

Key Things to Buy

• Quality: Aftermarket belt; adequate for residential use but may wear faster than OEM under heavy or frequent mowing.
• Installation Difficulty: Moderate—requires removing the mower deck and routing the belt around pulleys and tensioner. A diagram is helpful; take a photo before removal.
• Common Gotchas: The belt must be routed outside the tensioner pulley on most models. If the belt slips or squeals, check pulley alignment and tensioner spring condition.
• Durability: Not reinforced for high-torque or commercial use. Expect 1-3 seasons of typical homeowner use.

Should You Buy It

If you need an affordable replacement for a worn transmission belt on a compatible John Deere tractor and you’re comfortable with moderate DIY installation, this belt delivers solid value. For heavy-duty or commercial use, consider an OEM or premium aftermarket belt for longer life.