954-04045 Mower Deck Belt for 42-inch Cub Cadet LT1042 RZT42 Toro LX420 LX425 LX426 LX427 LX423 Troy Bilt Bronco MTD - Replaces 754-04045 490-501-M019 112-5800 | 1/2 x 109

Key Features

• Application: Primary Deck Drive Belt (Blade Belt)
• Type: V-Belt
• Width: 1/2 inch
• Outer Length: 109 inches
• Material: Durable rubber composite construction designed for high-stress mower deck applications.

Replaces / Cross-Reference Part Numbers

• Cub Cadet / MTD / Troy-Bilt: 754-04045, 954-04045, 490-501-M019, OCC-754-04045
• Toro: 112-5800

Compatibility & Fitment

• Fits specific riding mowers and lawn tractors with 42-inch cutting decks.
• Cub Cadet: LT1040, LT1042, RZT17, RZT42
• MTD: Fits various models manufactured between 2006 - 2008.
• Toro: LX420 (2006), LX423, LX425, LX426, LX427
• Troy-Bilt: Bronco, Super Bronco, TB2246, RZT-42
• Also fits select models from Yard Machines, White Outdoor, and Yard-Man.

When to Replace

• Visible damage such as cracks, fraying, glazing, or missing sections.
• Belt slips, causing inconsistent blade speed or poor cutting performance.
• Audible squealing or chirping from the deck area during operation.
• Blades fail to engage or stop spinning while the engine is running.

Installation Tips

• Before starting, disconnect the spark plug wire and engage the parking brake for safety.
• Lower the cutting deck to the lowest possible position to relieve tension.
• Take a photo or note the routing of the old belt around all pulleys before removal.
• Release the belt tensioner mechanism, typically an idler pulley on a spring-loaded arm.
• Remove the old belt and route the new belt according to your diagram or photo.
• Ensure the V-profile of the belt is seated correctly in each pulley groove.
• Re-engage the tensioner and verify the belt is taut and properly aligned.