42-inch Deck Belt 754-06134 / Kevlar Cord / 1/2" x 117" - Compatible with Cub Cadet Craftsman Troy-Bilt CMXGZAM501081 490-501-C081 754P06134 490-501-M081 Ultima Series ZT1-42 KH Z510 Mustang Z42

What It Is

This is a 42-inch deck belt (1/2" x 117") reinforced with Kevlar cord, designed to drive the blades on zero-turn mowers like Cub Cadet Ultima ZT1-42, Troy-Bilt Mustang Z42, and Craftsman Z510. It replaces OEM part numbers 754-06134, 490-501-C081, and CMXGZAM501081.

Fitment & Compatibility

• Deck size: Must be exactly 42 inches. Belts for 46" or 54" decks will not work.
• Brand/model: Fits Cub Cadet Ultima ZT1-42 (2018+), Troy-Bilt Mustang Z42, Craftsman Z510, and select Husqvarna zero-turns. Not for older Craftsman LT1000 or push mowers.
• OEM vs aftermarket: This is an aftermarket belt using the same specs as OEM. Check your owner’s manual for the exact OEM number (754-06134, 490-501-C081, 490-501-M081, or CMXGZAM501081) to confirm.
• Measurements: Verify belt length is 117 inches and width is 1/2 inch. A belt that’s too long will slip; too short won’t fit pulleys.
• Visual check: Look at your old belt for a printed part number or measure it while still on the deck (or use a string to trace the path).

Key Things to Know

• Kevlar cord adds durability over standard rubber belts—resists stretching and snapping under heavy grass or debris.
• Installation difficulty: Moderate. You’ll need to remove the deck or at least the belt cover, release the tensioner pulley, and route the belt per the deck diagram (usually a serpentine path around three pulleys).
• Common gotcha: The belt must be seated in all pulley grooves and the tensioner spring must be correctly positioned. A misrouted belt will cause blade slippage or belt damage on first use.
• Break-in: Expect slight initial stretch after first 30 minutes of use; re-check tension and adjust if needed.

Should You Buy It

Buy this belt if you own a 42-inch zero-turn from Cub Cadet, Troy-Bilt, or Craftsman (models listed) and want a reliable, longer-lasting replacement at a fair price. It’s a solid aftermarket option for DIY maintenance—just confirm your deck size and OEM number before ordering. Skip it if your mower has a different deck width or you need an OEM-specific belt for warranty purposes.