UP2WIN 918-04822B Spindle Assembly Compatible with Craftsman Cub Troy Bilt Pony Bronco 42" Mower Deck Tractor Riding Mower, Come with All the Mounting Hardware Including Threaded Bolt

What It Is

The UP2WIN 918-04822B spindle assembly is a replacement part for the mandrel that drives the mower blades on 42-inch riding mower decks. It’s designed for Craftsman, Cub Cadet, and Troy-Bilt tractors (including Pony and Bronco models) and comes fully assembled with the mounting bolt and hardware.

Fitment & Compatibility

Before buying, confirm these three things:

1. Deck size – This fits only 42-inch (42") stamped steel decks. It will not work on 46", 50", or fabricated decks.
2. OEM part cross-reference – The UP2WIN replaces OEM part number 918-04822B (and also 918-04822A, 918-04822, 918-04822BA, 918-04822BB). Check your mower’s manual or existing spindle for this number.
3. Physical check – Measure the spindle shaft diameter (should be 5/8"), the housing bolt pattern (3-bolt, 2.75" center-to-center), and the overall height (roughly 4.5"). If your old spindle matches these, it’s compatible.

It fits most Craftsman LT1000/2000, Cub Cadet LT1042/1050, Troy-Bilt Pony, and MTD 42" deck tractors from the early 2000s onward.

Key Things to Know

• Quality vs OEM – The UP2WIN is an aftermarket part. It’s built with a sealed bearing and cast iron housing, but the bearing quality may not last as long as a genuine OEM assembly (typically 2-3 seasons vs 4-5).
• Installation difficulty – Easy for a DIYer. You’ll need a socket set, a jack to raise the deck, and a breaker bar for the spindle bolt (torque to 40-50 ft-lbs). No special puller required.
• Common gotcha – The included bolt is a fine-thread 5/8"-18. Make sure your blade’s center hole is 5/8" and not 1/2" or 7/16". Also, the bolt is pre-coated with thread locker; don’t add extra.
• Hardware included – Comes with the spindle, mounting bolts, lock washers, and the blade bolt. You won’t need to buy anything extra for installation.

Should You Buy It

If you have a 42" Craftsman, Cub Cadet, or Troy-Bilt rider and need a quick, affordable spindle replacement, this is a solid value at $24. It’s perfect for budget-conscious DIYers who don’t mind replacing a spindle every few years. Not ideal if you want OEM longevity or have a heavy commercial mowing schedule.