1/2 X 89 GX20006 UC30568 Mower Drive Belt for John Deere 105 115 125 135 145 D110 D120 D125 D130 D140 D150 D155 D160 D170 L105 L107 L108 L110 L111 L118 L120 L130 Aramid Cord

What It Is

This is a replacement drive belt for select John Deere lawn tractors, transferring power from the engine to the mower deck. It’s designed to fit 42-inch and 48-inch decks on older 100-series and newer D100-series models.

Fitment & Compatibility

Before buying, confirm your mower’s model and deck size. This belt (1/2 inch wide, 89 inches long) replaces OEM part UC30568 and fits John Deere models: 105, 115, 125, 135, 145 (100-series) and D110, D120, D125, D130, D140, D150, D155, D160, D170, plus L105, L107, L108, L110, L111, L118, L120, L130. Do not assume fitment based on model alone—check your deck’s belt routing diagram or measure your old belt (89 inches is the critical length). This belt is not for zero-turn mowers or 54-inch decks.

Key Things to Know

• Quality: Aramid cord construction offers decent durability for residential use, but it’s not Kevlar; expect 1-2 seasons under normal mowing conditions.
• Installation: Moderate difficulty—you’ll need to remove the deck or release tension using the idler pulley. A belt tool helps, but a socket wrench works.
• Common gotchas: Verify belt routing (some John Deere decks have a specific twist or wrap pattern). If the belt is too loose or tight, check that your idler spring is not worn out.
• Price vs OEM: At $17.99, it’s roughly half the cost of a John Deere branded belt—worth it if you mow less than 1 acre weekly.

Should You Buy It

Buy this belt if you have a compatible John Deere lawn tractor with a 42- or 48-inch deck and want a reliable, budget-friendly replacement for seasonal use. Skip it if you need a heavy-duty belt for commercial mowing or prefer OEM parts for exact fit—those cost more but may last longer under heavy loads.