1/2" X89" Transmission Drive Belt for John Deere GX20006 105 107 108 115 125 135 145 155c D110 D120 D130 D140 D150 D160 D170 L105 L107 L108 L110 L111 L118 L120 L130

What It Is

This is a 1/2-inch wide by 89-inch long transmission drive belt designed for select John Deere lawn tractors. It transfers power from the engine to the transmission, enabling forward and reverse movement.

Fitment & Compatibility

Must check before buying: Confirm your mower’s model – this belt fits John Deere GX20006, 105, 107, 108, 115, 125, 135, 145, 155c, D110, D120, D130, D140, D150, D160, D170, L105, L107, L108, L110, L111, L118, L120, and L130. Not for zero-turn mowers or older series. Measure your old belt – it must be exactly 1/2" wide and 89" long. Aftermarket X89 is a direct replacement for OEM John Deere part number GX20006. Avoid using on different deck sizes or non-listed models.

Key Things to Know

• Quality: Aftermarket belt; good value at $9.99, but may wear slightly faster than OEM (typically $25+). Check reviews for longevity concerns.
• Installation: Moderate difficulty – you’ll need to remove the deck and possibly the mower deck belt to access the transmission belt. Watch a model-specific video.
• Common gotcha: Verify belt routing – some models require a specific path around idler pulleys. Incorrect routing causes slipping or premature wear.
• Check tension: After install, ensure the belt is snug but not overly tight. Loose belts can slip; overtightening can damage pulleys.

Should You Buy It

Buy this if you need a budget-friendly replacement for a listed John Deere lawn tractor and you’re comfortable with moderate DIY installation. It’s a solid choice for occasional use, but consider OEM if you mow heavy acreage or want maximum durability.