754-06134 1/2 x 117 1/4" 106-2173 Deck Belt Replacement for Cub Cadet 42" ZT1 42KH 42KW, Craftsman Z510 Z5200, Troy-Bilt Mustang Z42, Toro TimeCutter Z420 Z530, MTD 754-0197 954-0197, Aramid Cord

What It Is

This is a 1/2-inch wide by 117.25-inch long replacement deck belt for 42-inch zero-turn mowers. It drives the mower blades from the engine pulley to the spindles on Cub Cadet ZT1, Craftsman Z510/Z5200, Troy-Bilt Mustang Z42, and Toro TimeCutter Z420/Z530 models.

Fitment & Compatibility

Check these before buying:

• Deck size: Must be a 42-inch deck. This belt will not fit 46-inch or larger decks.
• Measure your old belt: It should be exactly 1/2 inch wide and 117.25 inches long. Verify by laying it flat and measuring end-to-end (not stretched).
• Model numbers: Confirmed for Cub Cadet ZT1 42KH, 42KW; Craftsman Z510, Z5200; Troy-Bilt Mustang Z42 (2012-2016); Toro TimeCutter Z420, Z530. Also replaces OEM parts 754-0197, 954-0197, and 106-2173.
• Aftermarket vs OEM: This is an aftermarket belt using aramid cord (stronger than standard rubber). It’s a direct replacement, but check pulley condition—worn or rusty pulleys shorten belt life.

Key Things to Know

• Aramid cord construction provides higher tensile strength and better heat resistance than standard rubber belts. It should last longer if pulleys are in good shape.
• Installation is moderate difficulty – you’ll need to remove the deck, release the belt tensioner, and route the belt around three spindles and the engine pulley. No special tools required.
• Common gotcha: The belt is 117.25 inches. Many generic “42-inch deck” belts are shorter (116-117 inches) and won’t fit. Confirm length before buying.
• Rating is 3.8/5 (14 reviews) – decent but not stellar. Some users report premature wear if pulleys are misaligned or damaged. Inspect all pulleys and replace any that wobble or have rough edges.

Should You Buy It

If you own one of the listed Cub Cadet, Craftsman, Troy-Bilt, or Toro 42-inch zero-turn mowers and need a budget-friendly replacement that’s stronger than a standard rubber belt, this is a solid choice. Avoid it if your pulleys are worn or if you prefer OEM for peace of mind—stick with the genuine Cub Cadet or MTD part instead.