754-0371A 954-0371A Deck Belt Fits MTD 754-0371 954-0271A for 42" Deep Deck 600 Series Lawn Tractors, 5/8"x74"

What It Is

This is a replacement deck belt (5/8" wide, 74" long) for 42-inch deep deck cutting systems on MTD 600 Series lawn tractors. It drives the mower blades from the engine pulley.

Fitment & Compatibility

Before buying, confirm three things: your deck is a 42" deep deck (not a 42" stamped deck), your tractor is an MTD 600 Series (e.g., Yard Machines, Yard-Man, Cub Cadet), and your original part number is 754-0371, 954-0371A, or 954-0271A. This belt is aftermarket, not OEM MTD, so measure your old belt end-to-end (unworn) to ensure it’s exactly 74 inches. Check your deck’s belt routing diagram—some 42" deep decks use a different length if you have a different spindle configuration.

Key Things to Know

• Quality varies – At this price point, some users report shorter lifespan than OEM belts, especially in heavy grass or dusty conditions. Expect 1-2 seasons with moderate use.
• Installation is moderate – You’ll need to remove the deck or access the belt from above. A belt tensioner tool (or a long screwdriver) helps to release tension. No special skills required, but allow 30-45 minutes.
• Common gotcha – The belt may be slightly stiff out of the box. Run the deck at low throttle for the first 5 minutes to seat it. Also, check that your deck pulleys spin freely—a seized spindle will shred any belt.
• Not for stamped decks – This belt is specifically for deep (fabricated) 42" decks. Using it on a stamped deck will cause slippage or incorrect blade speed.

Should You Buy It

If you need a budget-friendly replacement for a worn MTD 42" deep deck belt and don’t mind replacing it every couple of seasons, this is a solid value. For heavy commercial use or if you want maximum longevity, spend more on an OEM belt. Otherwise, it’ll get your mower cutting again without breaking the bank.