954-04044A Deck Belt for Cub Cadet RZT-50 Z-Force S 48 Troy Bilt Mustang XP 50 Craftsman MTD 954-04044 754-04044A 754-04044 50" Zero-Turn Mower V Belt/Aramid Cord / 1/2" x 134"

What It Is

This is a replacement deck belt (1/2" wide x 134" long) for 50-inch zero-turn mowers, including Cub Cadet RZT-50, Z-Force S 48, Troy-Bilt Mustang XP 50, Craftsman, and MTD models. It drives the mower blades via the engine pulley and is built with aramid cord for added durability under heavy cutting loads.

Fitment & Compatibility

• Deck size must be 50 inches – this belt will not fit 42", 46", or 54" decks.
• Cross-reference OEM numbers: 954-04044, 754-04044A, 754-04044. Verify your original belt part number matches one of these.
• Measure your old belt: Lay it flat, measure end-to-end (134 inches). If it’s stretched or worn, a new 134" belt may feel snug – that’s normal.
• Brands confirmed: Cub Cadet RZT-50 (2008–2015), Z-Force S 48, Troy-Bilt Mustang XP 50, Craftsman GT5000/GTX5000, MTD 50" zero-turn models. Check your model number against the seller’s list.
• Aftermarket vs OEM: This is an aftermarket belt (not Cub Cadet branded). It uses aramid cord, which is stronger than standard rubber, but may have slightly different tension feel.

Key Things to Know

• Aramid cord = less stretch – expect longer life than basic rubber belts, but initial break-in may require re-tensioning after the first few hours.
• Installation difficulty: Moderate. You’ll need to remove the deck or at least release tension from the idler pulley. A belt routing diagram is essential – take a photo before removing the old belt.
• Common gotcha: If your mower has a spring-loaded idler, make sure the belt seats fully in all pulley grooves. A misaligned belt will slip or throw under load.
• Quality note: At ~$23, this is a budget-friendly option. Some users report shorter lifespan compared to OEM (2–3 seasons vs 3–4), but it’s a good value for occasional use.

Should You Buy It

Buy this if you need a reliable, affordable replacement for a 50" zero-turn deck belt and don’t mind a slightly shorter service life than OEM. It’s a solid choice for home owners with one or two acres, but if you mow commercially or want maximum longevity, stick with the genuine Cub Cadet belt.