GX20006 Lawn Mower Drive Belt 89" x 1/2'' Inch Replacement for John Deere LA130, L118, D140, LA115, L110, D110, L120, LA120 LA125, L111 L130 Tractors

What It Is

The GX20006 is a 89-inch long, 1/2-inch wide lawn mower drive belt designed to transfer power from the engine pulley to the transmission or deck drive system on select John Deere lawn tractors. It’s a direct replacement for OEM belt number GX20006, commonly used on late-model Deere L and LA series garden tractors.

Fitment & Compatibility

Before buying, verify your mower’s model and deck size. This belt fits John Deere models including LA130, L118, D140, LA115, L110, D110, L120, LA120, LA125, L111, and L130—but only with 42-inch or 48-inch cutting decks (check your deck’s stamped model number). Measure your old belt’s length (end-to-end, not looped) and width; it must match 89” x 1/2”. OEM part number GX20006 is the direct cross-reference. If your tractor uses a different OEM number (e.g., GX20007 or M155103), this belt will not fit. Also confirm your deck’s spindle configuration—some 42” decks require a different belt for mulching or bagging setups.

Key Things to Know

• Quality: This is an aftermarket belt, not OEM John Deere. Expect slightly less durability than genuine Deere belts, especially under heavy loads or frequent use. The 3.9 rating is based on only 3 reviews, so long-term reliability is unproven.
• Installation: Moderate difficulty. You’ll need to remove the mower deck, release the belt tensioner (spring-loaded), and route the belt around pulleys per your deck diagram. A belt tension tool or a second person helps.
• Common gotchas: The belt may run slightly tight or loose on some decks—check tension after installation. If your old belt broke, inspect pulleys for damage or debris before installing the new one. Also, this belt is not for zero-turn mowers or older Deere models (e.g., LX series).
• Measurement check: Always measure your old belt’s length and width before ordering. Even a 1/4” difference in width can cause slipping or damage.

Should You Buy It

Buy this belt if you need a budget-friendly, quick replacement for a John Deere LA or D series tractor with a 42” or 48” deck and you’re comfortable with a moderately tricky install. Skip it if you want OEM-grade durability or have a different deck size—spend more on a genuine John Deere belt for heavy-use machines.