42 inch Deck Rebuild Kit Fit for Cub Cadet/MTD/Troy-Bilt LTX1040 LTX1042 RZT-42 Mower Includes (2) 918-04822 918-04889 Spindle (2) Idler 756-04129 (2) 742-04308 Blades (1) 754-04060 Be lt

What It Is

This 42-inch deck rebuild kit consolidates all wear items needed to restore a mid-duty residential lawn tractor’s cutting deck: two spindle assemblies (918-04822, 918-04889), two idler pulleys (756-04129), two blades (742-04308), and one drive belt (754-04060). Designed for Cub Cadet, MTD, and Troy-Bilt models with a 42-inch fabricated or stamped deck, it’s a one-box solution for decks that vibrate, cut unevenly, or won’t engage properly.

Fitment & Compatibility

Before buying, confirm your mower’s deck size is exactly 42 inches (measured blade tip to blade tip) and that your model is among these common platforms: Cub Cadet LTX1040, LTX1042, RZT-42; Troy-Bilt Pony, TB42; MTD 42-inch side-discharge or mulching decks. Check your current spindle part numbers—this kit uses 918-04822 (left) and 918-04889 (right); if your spindles are different (e.g., 918-04823), the kit won’t fit. Also verify belt length: the included 754-04060 is a 1/2" x 92.5" Kevlar belt—measure your old belt end-to-end. Blades are 42-inch set (742-04308), 2.75” wide, with a 5-point star center hole; ensure your blade adapter matches (most Cub/MTD/Troy use a 5-point star). If your deck uses a different belt length or blade mount (e.g., oval hole), this kit is incompatible.

Key Things to Know

• Quality: Spindles are aftermarket with sealed bearings and a grease fitting (OEM may lack a zerk). Blades are heat-treated steel but not hardened as OEM; they’ll dull faster on rocky terrain. Idlers are standard steel pulleys with plastic inserts—fine for residential use, not commercial.
• Installation difficulty: Moderate. You’ll need a socket set, breaker bar, and likely a puller for stuck spindle pulleys. Expect 2–3 hours for a first-time rebuild. Reuse your original spindle nuts and lock washers (not included).
• Common gotcha: The belt is tight. If your deck tensioner is weak or rusty, you may need to replace it separately. Also, the idler pulleys’ center hole is 5/8”; verify your idler arm bolt is the same diameter before forcing it.
• Kit completeness: Includes everything except spindle bolts (reuse yours) and deck washout fittings (if equipped). No instructions—watch a YouTube video for your model.

Should You Buy It

Buy this kit if your 42-inch Cub Cadet/MTD/Troy-Bilt is 5–10 years old, you have vibration, belt slipping, or uneven cut, and you want a single-purchase refresh without hunting individual parts. Skip it if you need OEM-grade blades for heavy mulching or commercial use (buy separate OEM spindles and high-lift blades), or if your deck has a different belt or spindle design. At $105, it’s a solid value for DIY