918-04822A 618-04822A Spindle Assembly Fits 42" Deck Cub Cadet MTD Troy-Bilt RZT-42 LTX1040 LTX1042 CC 30 Mini Riders 60" Deck ZT1 ZTS2 ZT2 ZT3 Lawn Mower OEM 918-04822 618-04822 618-04889

What It Is

This is a replacement spindle assembly for the cutting deck of Cub Cadet, MTD, and Troy-Bilt lawn tractors and zero-turn mowers. It houses the bearings and pulley that drive the mower blade, and is commonly needed when the blade wobbles, the spindle seizes, or the housing cracks from normal wear or debris strikes.

Fitment & Compatibility

Check these before buying:

• Deck size: Fits 42" and 60" decks (e.g., Cub Cadet RZT-42, LTX1040, LTX1042, CC 30 Mini Riders, and ZT1/ZTS2/ZT2/ZT3 series with 60" decks).
• OEM cross-references: Replaces OEM numbers 918-04822, 618-04822, and 618-04889. If your original part is any of these, this is a direct swap.
• Measurements: The spindle shaft is 5/8" diameter and the overall housing length is about 5.5". Confirm your deck’s spindle mount pattern matches (typically 3-bolt, 2.5" bolt circle).
• Aftermarket note: This is an OEM-spec replacement, not a genuine Cub Cadet part. It should fit as intended but verify blade bolt thread size (usually 5/8"-18 or 5/8"-11) before installing your blade.

Key Things to Know

• Quality: Made with sealed bearings and a steel housing. Most users report it holds up well, but some note the bearings are less robust than OEM on heavy commercial use.
• Installation: Moderate difficulty. Requires removing the deck, belt, pulley, and blade. A puller may be needed if the old spindle is seized. Reuse the original pulley and hardware unless damaged.
• Common gotcha: The spindle pulley bolt is reverse-thread on some models (left-hand rotation). Check your old spindle before installing—don’t force the bolt.
• Lubrication: Spindles come pre-greased; no additional maintenance needed. If you hear noise after install, check blade balance and deck level.

Should You Buy It

If you have a Cub Cadet, MTD, or Troy-Bilt with a 42" or 60" deck and need a reliable, budget-friendly replacement for a worn or failed spindle, this is a solid pick. It’s not for heavy commercial fleets, but for home lawn care and light-duty use, it offers good value and straightforward fitment.