954-05021 Mower Deck Belt for Cub Cadet 42 Inch XT1 LT42 XT2 LX42 Craftsman T210 T2200 MTD 754-05021 Lawn Mower - Aramid Cord, 1/2" X 99.75"

What It Is

The 954-05021 is a replacement mower deck belt (1/2" wide x 99.75" long) that drives the blades on 42-inch cutting decks. It’s designed for Cub Cadet XT1, XT2, LX42, and LT42 models, plus compatible Craftsman T210/T2200 and select MTD tractors.

Fitment & Compatibility

Before buying, confirm these three things:

1. Deck size & belt length – This belt fits only 42-inch decks. Measure your old belt end-to-end (it must be 99.75 inches). If your deck is 46” or 50”, this belt won’t work.
2. Model number cross-reference – OEM part numbers: 954-05021 (Cub Cadet), 754-05021 (MTD). It replaces Cub Cadet 954-05021A, 954-05021B, and MTD 754-05021A. Check your mower’s manual or current belt part number.
3. Brand compatibility – Direct fit for Cub Cadet XT1 LT42, XT2 LX42, and LT42; also fits Craftsman T210, T2200, and MTD 42” deck tractors with the same spindle/pulley layout. Not for zero-turn mowers or older non-MTD platforms.

Pro tip: If your mower has a “K46” or “Tuff Torq” transaxle, verify the belt routing diagram – some models use a slightly different tensioner arm.

Key Things to Do

• Quality: Aramid cord construction makes this belt stronger and more heat-resistant than standard rubber belts. It lasts longer under heavy use (thick grass, frequent mulching).
• Installation difficulty: Moderate (2/5). You’ll need to remove the deck, release the tensioner pulley, and route the belt around three spindles. No special tools required, but a socket set and a pry bar for the tensioner help.
• Common gotchas: (1) Belt routing is critical – check your deck’s diagram (usually printed on the deck or in the manual). (2) Don’t overtighten the tensioner – it should have ~1/2” of deflection when pressed. (3) If your old belt was frayed or cracked, inspect the pulleys for damage before installing.
• Warranty: Some aftermarket belts (like this) carry a 1-year warranty – save your receipt.

Should You Buy It

Yes, if you own a Cub Cadet XT1/XT2 or Craftsman T210/T2200 with a 42” deck and need a durable, direct-fit replacement. The aramid cord construction offers better longevity than budget belts, and the price (~$20) is fair. Skip it if your belt measures differently (e.g., 100.5” or 1/2” x 98”) – measure twice, buy once.