GX20072 42 inch Deck Belt for John Deere D110 L110 D105 E100 Lawn Mower | D130 S100 LA105 L100 D100 E130 L111 E110 E120 D125 125 LA135 LA110 S100 LA120 S120 LA125 UC32283 GY20570 Deck Belt

What It Is

This is a 42-inch deck belt designed to transfer power from the engine pulley to the mower blades on select John Deere lawn tractors. It’s a direct replacement for OEM part numbers UC32283 and GY20570, commonly used on 42-inch cutting decks.

Fitment & Compatibility

Before buying, confirm your John Deere model and deck size. This belt fits models: D110, L110, D105, E100, D130, S100, LA105, L100, D100, E130, L111, E110, E120, D125, 125, LA135, LA110, S100, LA120, S120, and LA125. It is not compatible with 48-inch or 54-inch decks. Measure your existing belt length (should be ~96.5 inches) and width (1/2 inch). This is an aftermarket belt, not OEM John Deere, but matches the same specs. Check your deck’s belt routing diagram—some models route differently (e.g., around idler pulleys).

Key Things to Know

• Quality vs OEM: This belt is priced lower than John Deere’s OEM belt. Users generally report good durability for residential use, but heavy commercial mowing may cause faster wear.
• Installation difficulty: Moderate. You’ll need to remove the deck or use a belt tensioner tool. Watch for spring-loaded idler pulleys that can snap back.
• Common gotchas: The belt may be slightly tighter than OEM on some models. Verify pulley alignment before tightening. If your deck has a “V” or “K” groove, ensure the belt profile matches (it’s a standard V-belt).
• Warranty: Usually 30-90 days from seller; check listing for specifics.

Should You Buy It

If you have a 42-inch deck John Deere from the list above and need a budget-friendly replacement for occasional residential mowing, this belt is a solid choice. For heavy use or if you prefer exact OEM fitment, spend more on the genuine John Deere belt. Otherwise, this is a reliable, cost-effective swap.