42 Inch Deck Rebuild Kit Replace for MTD/Cub Cadet/Troy Bilt CC30 Mini Rider LTX1040 LTX1042 RZT-42, with 2 Spindles 918-04822 918-04950, 2 Blades 742-04308, 2 Idlers 756-04129, 1 Belt 754-04060

What It Is

This 42-inch deck rebuild kit consolidates all wear items needed to refresh the cutting system on select MTD, Cub Cadet, and Troy Bilt zero-turn and lawn tractors with a 42-inch fabricated deck. It’s designed for one-and-done service—spindles, blades, idlers, and belt—so you can swap everything at once instead of chasing parts individually.

Fitment & Compatibility

Before buying, confirm three things:

• Deck size & type: This kit fits 42-inch fabricated (not stamped) decks only. Measure your deck width and verify the deck is welded steel, not a single stamped piece.
• Model cross-reference: It directly replaces OEM numbers 918-04822 (left spindle), 918-04950 (right spindle), 742-04308 (blades), 756-04129 (idler pulleys), and 754-04060 (belt). Works on Cub Cadet LTX1040, LTX1042, RZT-42, CC30 Mini Rider, and many Troy Bilt/MTD equivalents. Check your owner’s manual or existing part numbers.
• Measurements: The belt is 94.5″ long x 1/2″ wide. Blades are 16.25″ long with a 1″ center hole and 5/8″ diameter hub. Spindles use standard 5/8″ blade mount. If your deck uses a different belt length or blade hole pattern, this kit won’t fit.

Key Things to Know

• Quality vs OEM: Spindles and blades are aftermarket but solid—expect slightly thicker steel on spindles than some OEM units, but bearings are sealed and pre-greased. Blades are medium-duty; fine for residential grass but not commercial abuse.
• Installation difficulty: Moderate. You’ll need a jack or ramps to access the deck, a socket set (typically 1/2″ drive for spindle bolts), and a breaker bar. Plan 1.5–2 hours if you’re mechanically handy.
• Common gotcha: The idler pulleys use a 5/8″ bore with a pressed-in bearing—verify your existing idler arm shaft diameter matches. Some MTD decks use a 1/2″ shaft; if so, these pulleys won’t fit without an adapter.
• Belt routing: Take a photo of the old belt path before removal. The kit belt is correct for stock routing, but aftermarket decks or pulley swaps may need a different length.

Should You Buy It

Buy this if you own a 42-inch fabricated-deck Cub Cadet or MTD-style rider and want a complete, cost-effective refresh without sourcing parts separately. It’s ideal for DIY homeowners tackling a season-start overhaul. Skip it if your deck is stamped steel, you need OEM-only parts for warranty, or your idler arms use a 1/2″ shaft—those require a different kit.