GW-9245 GW-1128 Lawn Mower Horse Tiller Drive Belt fits MTD Troy-Bilt 9245 1128-1 GW-1128-1 (1/2" X 22-1/2")

What It Is

This is a replacement drive belt for the horse tiller attachment on MTD and Troy-Bilt lawn tractors. It transfers power from the engine pulley to the tiller gearbox, enabling tilling operation on compatible riding mowers.

Fitment & Compatibility

• Exact fit: Replaces OEM part numbers GW-9245, GW-1128, GW-1128-1, and 9245. Confirmed for MTD and Troy-Bilt models using these numbers.
• Measurements: 1/2 inch wide by 22-1/2 inches outside length. Measure your old belt (lay flat, measure outer circumference) before buying—slight variations can cause slipping or poor engagement.
• Check your model: Works with select Troy-Bilt Horse tiller attachments (e.g., models with 42-inch or 46-inch decks that accept the tiller). Verify your tractor’s model number and that the tiller attachment uses a single belt of these dimensions.
• Aftermarket: This is a non-OEM replacement. Quality is generally good for the price, but OEM belts may last longer under heavy use.

Key Things to Know

• Installation difficulty: Moderate. You’ll need to remove the tiller belt guard and possibly the deck belt to access the drive pulley. Allow 30–60 minutes.
• Belt tension: After installing, check tension—too loose causes slipping, too tight stresses bearings. Most tractors have a spring-loaded idler pulley; ensure it moves freely.
• Common gotcha: The belt may be slightly stiff when new. Run the tiller at low RPM for 5–10 minutes to seat it before full use.
• Durability: Rated for light to medium tilling (garden beds, loose soil). Avoid rocky or compacted clay—it can shred the belt quickly.

Should You Buy It

If you need a budget-friendly replacement for a Troy-Bilt or MTD horse tiller drive belt and your old belt measures 1/2" x 22-1/2", this is a solid pick. It’s not built for commercial use, but for occasional home tilling, the price and reviews support it. Just confirm your model number and measure the old belt first.