954-05021 1/2 X 100in Mower Deck Belt for Cub Cadet 42 Inch 754-05021 XT1-LT42 XT2-LX42 Ariens 21546422 21547025 21547238 592855001 Craftsman T210 T2200 T2200K T7800 T8000 Aramid Cord

What It Is

This is a 1/2-inch wide, 100-inch long Aramid cord-reinforced V-belt designed to drive the blades on 42-inch mower decks. It’s a direct replacement for OEM belts on Cub Cadet XT1, XT2, and several Craftsman and Ariens zero-turn and lawn tractor models.

Fitment & Compatibility

Before buying, verify your deck width is exactly 42 inches (measured cutting swath, not chassis). This belt measures 1/2" wide x 100" outside circumference. It replaces OEM part numbers: Cub Cadet 954-05021 / 754-05021, Ariens 21546422 / 21547025 / 21547238 / 592855001, and Craftsman models T210, T2200, T2200K, T7800, T8000. If your mower uses a different OEM belt number (e.g., 954-05019 or 954-05023), this belt will not fit. Measure your old belt if possible—a 1/2" width difference or 1" length error means it won’t stay on pulleys.

Key Things to Know

• Aramid cord offers better heat and wear resistance than standard rubber belts—good for heavy grass or frequent use.
• Installation is straightforward but requires removing the deck or accessing belt routing under the deck. No special tools needed.
• Check pulley condition first—worn or rusty pulleys will chew up any belt quickly. Replace any pulley that’s rough or has sharp edges.
• Common gotcha: This belt is directional. Look for an arrow on the back; if present, install it so the arrow points in the direction of rotation. If no arrow, either direction works.

Should You Buy It

If you own a 42-inch Cub Cadet XT1-LT42, XT2-LX42, or compatible Ariens/Craftsman model and need a reliable, affordable replacement that outperforms basic rubber belts, this is a solid choice. It’s best for residential users who mow 1–2 acres weekly and want a belt that won’t stretch or crack after one season. For commercial or heavy-duty use, consider a Kevlar-reinforced OEM belt instead.