5/8 x 71 954-04249A Lower Drive Belt for Troy Bilt MTD 754-04249 954-04249 LT4200 LT2000 T100 T110 AYP 2630R 3541R Toro 55-7660 Craftsman 13066MA Dixon 539116685 6971 85710 Murray 43066 43066MA

What It Is

This is a replacement lower drive belt (5/8" wide, 71" long) for select Troy-Bilt, MTD, Craftsman, AYP, Toro, Dixon, and Murray lawn tractors. It connects the engine pulley to the transmission or deck drive system, enabling blade engagement and forward motion on mid-size residential mowers.

Fitment & Compatibility

Before buying, verify these three things:

• Belt dimensions: Must be exactly 5/8" wide x 71" long (OEM part numbers 954-04249A, 754-04249, 954-04249).
• Deck size: Works with 42" and 46" decks on models like Troy-Bilt LT4200, LT2000, T100, T110; Craftsman 13066MA; Murray 43066/43066MA; AYP 2630R, 3541R; Toro 55-7660; Dixon 539116685, 6971, 85710.
• OEM vs aftermarket: This is an aftermarket belt (Craftsman-branded but not genuine MTD). It matches OEM specs but may have slightly different rubber compound or stiffness. Check your model number against the full compatibility list—many MTD/Troy-Bilt/John Deere 100-series tractors also use this belt.

Critical check: Measure your old belt length (end-to-end, not around pulleys). If it’s 70.5" or 72", this belt won’t fit. Also confirm your deck uses a single lower drive belt (not a two-belt system).

Key Things to Know

• Quality: 4.5 stars from 119 reviews indicates consistent reliability for residential use. The belt is reinforced with polyester cord—adequate for occasional mowing but may wear faster than OEM on heavy commercial use.
• Installation difficulty: Moderate. You’ll need to remove the deck or access the belt routing under the mower. No special tools required, but a belt tensioner tool (or a pry bar) helps.
• Common gotchas:
  • This belt is directional—check the arrow on the belt for correct rotation.
  • If your mower has a spring-loaded tensioner, release tension fully before installing to avoid pinching the belt.
  • After installing, run the mower for 2–3 minutes, then recheck belt tension—new belts often stretch slightly.
• Warranty: Most sellers offer 30-day return; no long-term warranty. Keep your old belt as a backup until you’re sure the fit is correct.

Should You Buy It

Buy this belt if you need an affordable, direct replacement for a 5/8" x 71" lower drive belt on a Troy-Bilt, MTD, Craftsman, or compatible residential lawn tractor. It’s a solid value for weekend mowing, but if you mow multiple acres weekly or have a commercial zero-turn, consider an OEM belt for longer life.