42 Inch Mower Deck Rebuild Kit for Cub Cadet MTD Troy Bilt LTX1042 LTX1040 RZT-42 Craftsman LT1500 LT2000 Parts Spindle 918-04822B Idler 756-04129B Belt 954-04060

What It Is

This 42-inch mower deck rebuild kit includes replacement spindles, idler pulleys, and a drive belt to restore cutting performance on mid-size lawn tractors and zero-turn mowers. It’s designed for decks that have worn bearings, seized pulleys, or a slipping belt.

Fitment & Compatibility

• Deck size: Fits 42-inch stamped or fabricated decks. Measure your deck’s cutting width to confirm.
• Brands/models: Cub Cadet LTX1042, LTX1040, RZT-42; MTD and Troy-Bilt equivalents with 42-inch decks; Craftsman LT1500, LT2000. Also fits many Husqvarna, Poulan, and Murray models with the same deck pattern.
• OEM cross-references: Spindle #918-04822B, idler #756-04129B, belt #954-04060. Verify these numbers on your current parts before ordering.
• Check before buying: Pull the old spindle and idler to compare shaft diameter, pulley groove width, and mounting hole pattern. The belt length is 96.5 inches (outside circumference)—measure your old belt to be safe.

Key Things to Know

• Quality: Aftermarket kit. Spindles have sealed bearings; idlers use metal pulleys. Not OEM, but functional for most homeowners. Expect slightly lighter-duty bushings than factory parts.
• Installation difficulty: Moderate. Requires removing the deck, unbolting the old spindles and idler, and routing the new belt. A socket set, breaker bar, and belt routing diagram are essential. Plan 1–2 hours.
• Common gotchas: The belt may be slightly tight; use a belt tensioner tool or pry bar to install. Spindle bolts often rust—soak with penetrating oil before removal. Torque spindle nuts to 30–40 ft-lbs; overtightening can warp the pulley.
• Wear items: Replace deck blades at the same time—new spindles and belt won’t fix dull or unbalanced blades.

Should You Buy It

Buy this kit if you’ve got a worn spindle bearing, a shredded belt, or a noisy idler on your 42-inch Cub Cadet, MTD, or Craftsman mower and want a single, cost-effective repair. It’s a good value for DIY homeowners who don’t need OEM parts. Skip it if you have a commercial mower or need exact OEM fit—buy genuine spindles and belt separately.