Deck Belt/Kevlar Cord / 1/2" x 109" - Compatible with Toro 112-5800, MTD Cub Cadet Troy Bilt 954-04045 754-04045 42 Inch Cut Decks LX426 LX423 LX425 RZT-42

What It Is

This is a 1/2-inch wide, 109-inch long Kevlar-reinforced deck belt designed for 42-inch cut lawn mower decks. It transfers power from the engine pulley to the spindle blades, primarily for residential zero-turn and riding mowers from Toro, Cub Cadet, MTD, and Troy-Bilt.

Fitment & Compatibility

Critical checks before purchase:

• Deck size: Only fits 42-inch cut decks. Measure your belt groove width (must be 1/2") and overall length (109"). A 1/2" difference can cause slipping or damage.
• OEM cross-reference: Confirmed fits Toro 112-5800, MTD/Cub Cadet/Troy-Bilt 954-04045, 754-04045.
• Model compatibility: Works with Cub Cadet LX426, LX423, LX425, RZT-42, plus many MTD and Troy-Bilt models with 42" decks using these OEM numbers. Double-check your mower’s model number in the owner’s manual or under the seat—generic “42-inch” claims can be wrong.
• Aftermarket vs OEM: This is a Cub Cadet-branded aftermarket belt, not genuine OEM. It uses Kevlar cord for strength but may differ slightly in thickness or flexibility from factory belts.

Key Things to Know

• Kevlar cord means it resists stretching and heat better than standard rubber belts, but it’s stiffer initially—may need a few minutes of run-in to seat properly.
• Installation difficulty: Moderate. You’ll need to remove the deck or access the belt routing from under the mower. A belt diagram is usually printed on the deck or in the manual—snap a photo before removing the old belt.
• Common gotcha: If your old belt measured slightly different (e.g., 108" or 110"), this 109" belt may not tension correctly. Measure your old belt’s length by laying it flat, not stretched.
• Lifespan: With Kevlar, expect 2-3 seasons with proper tension. Check for fraying or glazing after heavy use—especially on zero-turn models with sharp pulley angles.

Should You Buy It

If you have a Toro, Cub Cadet, MTD, or Troy-Bilt with a 42" deck and the exact OEM numbers listed, this is a solid, durable replacement at a fair price. It’s ideal for homeowners who want Kevlar strength without paying OEM markup, but skip it if your mower uses a different belt length or deck size—double-check measurements first.