RZT Hydrostatic Transmission Drive Belt 1/2" x 69.125" Made with Kevlar for 754P05874 754-05874 CMXGZAM501089 490-501-C089 Cub Ct Craftsman Troy-Bilt

What It Is

This is a 1/2" x 69.125" Kevlar-reinforced drive belt designed for the hydrostatic transmission on RZT zero-turn mowers. It replaces OEM part numbers 754P05874, 754-05874, CMXGZAM501089, and 490-501-C089, fitting select Cub Cadet, Craftsman, and Troy-Bilt models.

Fitment & Compatibility

Before buying, verify your mower’s model number (not just brand) and check the existing belt’s length and width. This belt fits RZT models with 42", 46", 50", or 54" decks—but not all. Common compatible models include Cub Cadet RZT 42/46/50/54, Craftsman ZTS 6000/7000, and Troy-Bilt Mustang 42/46/50. Measure your old belt: it must be exactly 1/2" wide and 69.125" long. If your OEM belt is a different length (e.g., 68.5" or 70"), this won’t work. Cross-reference your mower’s manual or parts diagram for OEM numbers listed above—aftermarket belts may vary slightly in tension.

Key Things to Know

• Quality: Kevlar cord resists stretching and heat better than standard rubber belts, but it’s still a wear item—expect 2-3 seasons with normal use.
• Installation: Requires removing the deck and belt cover. Use a belt tensioner tool or a long screwdriver to relieve spring tension. Not difficult, but allow 30-60 minutes if you’re new.
• Common gotcha: This belt drives the hydrostatic pumps, not the deck blades. If your mower moves slowly or slips, the transmission belt is likely worn—check for glazing or fraying first.
• Aftermarket note: This is a non-OEM belt. It fits correctly on most RZT platforms but may run slightly tighter or looser than OEM. Test engagement after install.

Should You Buy It

If you have a compatible RZT model and need a reliable, affordable replacement for a worn transmission belt, this is a solid pick. The Kevlar construction adds durability over budget options, and the 5.0-star rating from verified buyers suggests consistent fit. Best for DIY owners comfortable with basic deck removal—just double-check your mower’s model number before clicking buy.