CUB CADET 954-05077 V Belt 4L X 44.6" WST ST200 ST100 26SD710 262J756 262J710

What It Is

This is a 4L x 44.6-inch V-belt (OEM part 954-05077) that drives the mower deck blades on select Cub Cadet and MTD-built riding mowers. It’s designed for 42-inch and 46-inch cutting decks with a spindle-to-spindle belt routing.

Fitment & Compatibility

Before buying, verify your mower’s model and deck size. This belt fits Cub Cadet ST100, ST200, ST300 series, plus older models like 26SD710, 262J756, and 262J710. It also works on some MTD, Troy-Bilt, and Yard Machines with 42-inch or 46-inch decks. Critical check: measure your old belt length end-to-end (not looped) – it must be 44.6 inches. The belt has a 4L cross-section (1/2 inch wide, 5/16 inch thick). If your deck uses a different belt length (e.g., 42.5 or 45 inches), this won’t fit. Confirm your deck’s spindle pulley diameter is compatible (typically 4-5 inches). OEM part number is 954-05077; aftermarket equivalents exist but may vary in tension.

Key Things to Do

• Quality: This is an OEM Cub Cadet belt – better rubber compound and reinforcing cord than generic aftermarket belts. Expect longer life under heavy grass or wet conditions.
• Installation difficulty: Moderate. You’ll need to remove the deck or at least the belt covers. Route the belt around spindles and tensioner exactly as shown in your deck diagram – a misroute will cause slipping or damage.
• Common gotcha: If your mower has a spring-loaded idler pulley, ensure it’s not seized or worn before installing the new belt. A stuck idler will quickly wear this belt out.
• Storage tip: Store the belt flat, not hanging on a hook. Hanging can cause permanent stretch and premature failure.

Should You Buy It

If you own a Cub Cadet ST100/ST200/ST300 or compatible MTD/Troy-Bilt with a 42-46 inch deck, this is the correct OEM replacement. It’s worth the price over cheaper belts because it lasts longer and fits without guesswork. Skip it if your belt measures differently or your deck uses a different cross-section (e.g., 5L or A-section).