GX20072 Lawn Mower Traction Drive Belt 1/2"x104" for John Deere GY20570 L 100 130 1742 D 100 110 120 130 X 110 125 145 LA 105 D100 D105 D110 D120 D125 D130 E100 E110 E120

What It Is

This is a 1/2-inch wide, 104-inch long traction drive belt designed to transfer power from the engine to the rear wheels on select John Deere lawn tractors. It’s a direct replacement for OEM part GY20570, used on L100, D100-D130, E100-E130, X110-X145, and LA105 series mowers from the early 2000s onward.

Fitment & Compatibility

Before buying, confirm three things:

1. Model series – Fits L100, L130, D100, D105, D110, D120, D125, D130, E100, E110, E120, X110, X125, X145, LA105, and 1742. Not compatible with X300+ series or zero-turns.
2. Deck size – Works with 42-inch, 48-inch, and 54-inch decks on these models. Deck size does not change belt length for traction drive.
3. Belt dimensions – Must be exactly 1/2" wide x 104" long. Measure your old belt or check your mower’s manual. Aftermarket belt (not OEM John Deere) – may have slightly different rubber compound or stiffness.

Key Things to Know

• Quality varies – At $12.69, this is a budget aftermarket belt. Some users report shorter lifespan (1-2 seasons) vs. OEM ($25+). Inspect for fraying or cracking after heavy use.
• Installation tips – Requires removing the deck and mower pulley covers. Use a belt tool or long screwdriver to route around tensioner pulley. No special tools needed, but allow 30-45 minutes.
• Common gotcha – Belt must be routed correctly around the idler pulley. Wrong routing causes slipping or premature wear. Check your model’s belt diagram (usually under the hood or in the manual).
• Not for reverse – This is a forward traction drive belt only. Reverse is handled by a separate belt on most models.

Should You Buy It

Buy this if you need a cheap, functional replacement for a worn traction belt and are comfortable with basic mower maintenance. Skip it if you want OEM durability for heavy commercial use or if your mower sees more than 50 hours per season—invest in a John Deere or Gates branded belt instead.