918-04822 Spindle Assembly Compatible with 42" Decks Cub Cadet/MTD/Troy-Bilt LTX1040 LTX1042 LTX1045 RZT-42, 618-04822, 918-04822B, 918-04950, 918-04889, with Mounting Bolts (2PCS)

What It Is

This spindle assembly is a replacement part for the blade-mounting hub and bearing housing on 42-inch decks used by Cub Cadet, MTD, and Troy-Bilt lawn tractors. It’s designed for models like the LTX1040, LTX1042, LTX1045, and RZT-42, as well as zero-turn and riding mowers with a 42-inch fabricated or stamped deck.

Fitment & Compatibility

Before buying, confirm your deck is exactly 42 inches wide (measured blade tip to blade tip). This spindle replaces OEM numbers 618-04822, 918-04822B, 918-04950, and 918-04889. It fits Cub Cadet, MTD, and Troy-Bilt tractors with a 42-inch deck that uses a three-spindle configuration. Check the bolt pattern: the mounting flange uses three bolts (included) spaced about 3 inches apart. Measure the shaft diameter—this spindle uses a 5/8-inch shaft with a keyway. It will not fit decks wider than 42 inches or older models with a 1-inch shaft. Verify your deck’s pulley size (typically 4.5 inches) if swapping from a different brand.

Key Things to Know

• Quality: Aftermarket part with solid bearings and a steel housing. Reviews note it’s comparable to OEM but priced lower. Expect 1-3 seasons of typical residential use.
• Installation: Moderate difficulty. You’ll need a jack to lift the mower, a socket set, and a puller if the old spindle is seized. The included mounting bolts are a plus, but check they match your deck’s thread pitch (likely 5/16-18).
• Common gotchas: The spindle may not fit deep-deck models (e.g., fabricated “Aero” decks) without modifying the pulley or belt guide. Also, ensure you buy two if replacing a pair—some decks need both spindles balanced for even cut.
• Bearing type: Sealed ball bearings—no greasing needed. If you hear noise after installation, the spindle may be overtightened or the deck is bent.

Should You Buy It

Buy this if you have a 42-inch Cub Cadet/MTD/Troy-Bilt tractor or zero-turn with a stamped steel deck and need a reliable, budget-friendly replacement for a worn or noisy spindle. Skip it if you have a deep-deck or fabricated “Aero” deck, or if you need a spindle with a different shaft diameter or pulley size.