UDC Parts 954-04208A Upper Drive Belt Replacement for Cub Cadet LTX1040 954-04208 MTD Troy Bilt Bronco Craftsman 754-04208A 754-04208 Lawn Mowers/Aramid Cord / 40.90 inches

What It Is

This is the upper drive belt for Cub Cadet, MTD, Troy-Bilt, and Craftsman lawn tractors, transferring power from the engine pulley to the transmission or mower deck. It’s designed for residential zero-turn and riding mowers with a 40.90-inch belt length, typically used in models like the Cub Cadet LTX1040.

Fitment & Compatibility

Before buying, verify three things: belt length (this is 40.90 inches; measure your old belt or check your manual), belt width (typically 1/2 inch for this application), and OEM part numbers (cross-references include 954-04208, 754-04208A, and 754-04208). This belt fits Cub Cadet LTX1040 series, MTD Troy-Bilt Bronco, and Craftsman models with 42-inch or 46-inch decks that use that specific drive belt routing. It’s an aftermarket replacement, not OEM, so check that your mower’s pulley system is in good shape—worn pulleys can cause premature belt failure. Avoid using if your mower requires a belt longer than 41 inches or a different width (e.g., 3/8 inch).

Key Things to Know

• Aramid cord construction: More durable than standard rubber belts, but still requires proper tension—don’t overtighten.
• Installation difficulty: Moderate. You’ll need to remove the deck or belt cover, route around pulleys, and possibly release a spring tensioner. Allow 30-60 minutes.
• Common gotcha: The belt may seem loose after installation if the tensioner isn’t fully released. Double-check routing against your mower’s diagram to avoid slipping.
• Quality note: 4.3 stars from 12,782 reviews suggests reliable performance for most users, but occasional reports of early wear if pulleys are misaligned.

Should You Buy It

If you need a budget-friendly, reliable upper drive belt for a Cub Cadet LTX1040 or similar MTD-based mower, this is a solid choice. It’s best for DIY homeowners who want a direct replacement without paying OEM prices. Avoid it if you prefer OEM parts for warranty reasons or if your mower has unusual pulley spacing—measure first.