954-04325 1/2" X 125" 46" Mower Deck Belt for MTD Cub Cadet RZT46 RZT46 TZT-L46 RZT-S46 Deck Cub Cadet Zero Turn Parts 754 04325 954 04325 Deck Belt

What It Is

This is a 1/2-inch wide, 125-inch long V-belt that drives the twin blades on 46-inch MTD and Cub Cadet zero-turn mower decks. It’s the primary deck belt for models like the RZT46, TZT-L46, and RZT-S46.

Fitment & Compatibility

Before buying, confirm your deck is exactly 46 inches (measured blade tip to blade tip). This belt replaces OEM parts 754-04325 and 954-04325. It fits Cub Cadet RZT46, TZT-L46, RZT-S46, and some RZT50 models with the 46-inch fabricated deck—not stamped decks. Check your mower’s model number (on the frame under the seat) against Cub Cadet’s compatibility list. Aftermarket belts vary in construction; this one is a direct replacement for the OEM spec.

Key Things to Know

• Quality: Aftermarket belt at a budget price. Should last a season or two under normal residential use, but may stretch sooner than OEM.
• Installation: Moderate difficulty—requires removing the deck or releasing the tensioner pulley. Have a diagram handy; routing is specific.
• Measurement check: Width is 1/2”, length is 125”. A belt that’s even 1/4” off can cause slipping or poor blade engagement.
• Common gotcha: Tensioner spring can be stiff—use a pry bar or belt tool. Don’t overtighten; the belt should deflect about 1/2” when pressed.

Should You Buy It

If you need a quick, low-cost replacement for a 46-inch Cub Cadet zero-turn deck and don’t mind replacing it more often than an OEM belt, this is a solid value. Not for heavy commercial use.