954-05021 42 Inch Deck Belt for Cub Cadt XT1-LT42 XT2-LX42 with 42" Deck Mower Craftsman MTD Troy Bil 954-05021A 754-05021 754-05021A T210 T8000 T7800 Lawn Tractor,1/2" x 100"

What It Is

This is a 42-inch deck drive belt (1/2” x 100”) for 42” cutting deck mowers, specifically designed for Cub Cadet XT1-LT42, XT2-LX42, and compatible Craftsman, MTD, and Troy-Bilt models. It transfers power from the engine pulley to the deck blades.

Fitment & Compatibility

Check these before buying:

• Deck size must be exactly 42 inches – measure your deck (not the mower model number alone). This belt will not fit 46” or 50” decks.
• OEM cross-references: 954-05021, 954-05021A, 754-05021, 754-05021A. Verify your mower’s manual or current belt part number matches one of these.
• Brand/model examples: Cub Cadet XT1-LT42, XT2-LX42, Craftsman T210, T8000, T7800, and many MTD/Troy-Bilt 42” deck tractors. Not for zero-turn or riding mowers with different deck sizes.
• Physical specs: 1/2” width, 100” length. If your old belt measures differently, it won’t work.

Key Things to Know

• Quality: Aftermarket replacement, typically Kevlar-reinforced. Good for residential use but may wear faster than OEM on heavy-duty or commercial mowing.
• Installation: Moderate difficulty – you’ll need to release deck tension, route around pulleys, and re-tension. Watch a model-specific video; routing errors cause slipping or breakage.
• Common gotcha: This belt fits only 42” decks with a specific pulley layout. If your deck has an odd number of spindles or different pulley spacing, it won’t align.
• Warranty/return: Check seller’s return policy – belts are often non-returnable once installed or worn.

Should You Buy It

If you own a Cub Cadet XT1-LT42, XT2-LX42, or a compatible Craftsman/MTD/Troy-Bilt with a 42” deck and need an affordable replacement for light to moderate residential mowing, this belt is a solid value. For heavy commercial use or if your OEM belt lasted many seasons, consider OEM for potentially longer life.