954-05087A Lawn Mower 46" Deck Belt 1/2" x 108" for Cub Ct MTD Troy-Bilt Craftsman 754-05087 954-05087 754-05087A CMXGZAM501083

What It Is

This is a replacement deck drive belt for 46-inch cutting decks on select Cub Cadet, MTD, Troy-Bilt, and Craftsman lawn tractors. It connects the engine pulley to the deck spindles to spin the blades.

Fitment & Compatibility

• Measurements: 1/2" wide x 108" long (exact match for OEM part numbers 754-05087, 954-05087, 754-05087A, and CMXGZAM501083).
• Deck size: Fits 46-inch stamped or fabricated decks only (not 42" or 50").
• Brands: Cub Cadet (LTX 1046, RZT 50, etc.), MTD (700/900 series), Troy-Bilt (Pony, Bronco), Craftsman (LT1000/GT5000 with 46" deck).
• Before buying: Measure your old belt length (lay flat, measure end-to-end). Verify your deck model number (stamped under the deck or on the frame). Cross-reference your tractor’s model number on MTD’s parts lookup—don’t rely on brand alone.

Key Things to Know

• Quality: Aftermarket belt (not OEM). Some users report shorter lifespan than OEM (1-2 seasons vs 3-4). Inspect for fraying after heavy use.
• Installation difficulty: Moderate. You’ll need to release belt tension (spring-loaded idler pulley) and route around deck pulleys. A diagram from your owner’s manual or online is essential.
• Common gotchas: Belt is directional—check arrows on the belt vs pulley rotation direction. If it squeals or slips, re-check routing and tensioner function. Over-tensioning can damage spindle bearings.
• Check pulleys: Worn or bent pulleys will kill a new belt quickly. Spin each pulley by hand—replace any that wobble or grind.

Should You Buy It

This is a solid budget pick for a quick deck belt replacement on common 46" MTD-family tractors. It’s not premium, but it works reliably for light-to-moderate residential mowing. If you mow heavy grass or commercial-grade acreage, spring for the OEM belt for longer life.