754-0498, 954-0498 Lawn Mower Deck Belt for Cub Cadet/MTD/Troy-Bilt 42" Lawn Tractor, Drive Belt 954-04317A 754-04317 for RZT-L42 RZT-L46 RZT-L50 RZT-L54 RZT-S42 RZT-S46 RZT-S50 / Aramid 1/2" x 67"

What It Is

This is a 1/2" x 67" aramid-reinforced drive belt that connects the engine pulley to the mower deck spindles on Cub Cadet, MTD, and Troy-Bilt 42-inch lawn tractors and zero-turn riders. It’s designed for models like the RZT-L42, RZT-S42, RZT-L46, and RZT-S50, replacing OEM part numbers 954-04317A and 754-04317.

Fitment & Compatibility

Before buying, confirm your deck is exactly 42 inches (measured blade tip to blade tip). This belt fits Cub Cadet RZT-L42, RZT-L46, RZT-L50, RZT-L54, RZT-S42, RZT-S46, and RZT-S50 models, plus many MTD and Troy-Bilt 42-inch lawn tractors from the 2000s and 2010s. Cross-check your old belt’s part number—this replaces OEM 754-0498, 954-0498, 954-04317A, and 754-04317. Measure your old belt length (end to end, flat) to verify 67 inches; a 1/2-inch width is standard for these decks. Avoid assuming fit for non-listed models—check your owner’s manual or the belt routing diagram under the deck.

Key Things to Know

• Aramid construction offers better heat and wear resistance than standard rubber belts, lasting longer under heavy use or frequent mowing.
• Installation is moderate—you’ll need to remove the deck or at least the belt guard. Watch the routing diagram carefully; improper routing causes slipping or premature wear.
• Belt tension is critical—if the belt is too loose, it will slip and burn; too tight, it can damage pulleys or bearings. Use the deck’s tensioner spring and adjust as needed.
• Common gotcha: This belt is not for 46-inch or 50-inch decks on non-RZT models—double-check your deck size and model number before buying.

Should You Buy It

If you own a Cub Cadet, MTD, or Troy-Bilt 42-inch zero-turn or lawn tractor (especially RZT series), this belt is a solid upgrade over standard belts for the price. It’s a good choice for DIY replacement if you’re comfortable with basic deck work and want a durable, long-lasting drive belt that matches OEM specs without paying dealer prices.