Lawn Mower Spindle for Cub Cadet Craftsman Columbia Huskee Troy-Bilt Murray 42 inch Deck Lawn Mowers Mandrel Assembly Replacement Part Number 618-04822 918-04822B 618-04889 2-Pack

What It Is

This is a replacement spindle assembly (mandrel) for the 42-inch deck found on many Cub Cadet, Craftsman, Columbia, Huskee, Troy-Bilt, and Murray lawn tractors. It drives the blade and houses the bearings; when it wobbles, squeaks, or seizes, the mower won’t cut evenly.

Fitment & Compatibility

• Measure your deck width – this spindle is designed for a 42-inch deck only. Do not use on 46-inch or 54-inch decks without verifying center-to-center spindle spacing (typically 5.5 inches for this part).
• Check your old part number – this 2-pack replaces OEM numbers 618-04822, 918-04822B, and 618-04889. If your spindle has a different number, measure the mounting hole pattern (two holes, 4.25 inches apart) and the shaft diameter (5/8 inch).
• Brand cross-fit – fits most Cub Cadet, Craftsman, Columbia, Huskee, Troy-Bilt, and Murray models with a 42-inch stamped steel deck from the early 2000s onward. Double-check your specific model number on the deck sticker or frame tag.
• Aftermarket vs. OEM – this is an aftermarket replacement. It’s functionally identical to OEM but may have slightly different grease fitting placement or bearing brand. It works fine for most residential use.

Key Things to Know

• Bearings are pre-installed – no pressing or bearing removal needed. You just unbolt the old spindle and bolt this one in. Expect about 30–45 minutes per spindle.
• Use a new blade bolt – the included hardware is often low-grade. Replace the blade bolt with a Grade 8 bolt and use thread locker to prevent loosening.
• Check blade alignment after install – if blades don’t spin freely or the spindle feels rough, the bearings may be dry. A small amount of grease through the zerk fitting (if present) helps.
• Common gotcha – the mounting holes may be slightly off on some older decks. You can file the holes 1/16 inch if needed, but if the mismatch is larger, return and get a different brand.

Should You Buy It

Buy this 2-pack if you have a 42-inch deck on a residential Cub Cadet, Craftsman, or similar tractor and one or both spindles are failing. It’s a solid value for the price, with good reviews and easy installation. Avoid if you need OEM exactness for a commercial mower or have a deck with odd bolt patterns—measure first to save a return.