Spindle Assembly Replaces for Cub Cadet MTD 918-04822A 918-04822B 618-04822 918-04889 CP 30-8001 Rotary 14328 Troy bilt Deck Spindle Lawn Mower Deck

What It Is

This spindle assembly is the rotating hub that drives the mower blade on your lawn tractor. It’s designed for Cub Cadet, MTD, Troy-Bilt, and other compatible brands with 42–54-inch decks, replacing worn or failed spindles that cause blade wobble, vibration, or cutting unevenness.

Fitment & Compatibility

Before buying, verify these three things:

• Model & Brand: Fits Cub Cadet, MTD, Troy-Bilt, and select Craftsman/RYOBI models using OEM part numbers 918-04822A, 918-04822B, 618-04822, 918-04889, CP 30-8001, or Rotary 14328. Cross-check your mower’s model number (not engine model) against these.
• Deck Type: Works on stamped steel and fabricated decks with a 1-inch diameter spindle shaft. Measure your existing spindle shaft diameter and overall length (this one is roughly 6.5 inches tall).
• Bearing & Housing: Uses two sealed ball bearings pre-installed in a cast-iron housing. If your deck uses a different bearing size or a plastic housing, this won’t fit.

Key Things to Know

• Quality: This is an aftermarket part, not OEM Cub Cadet. Most users report it’s equal or better than OEM, with sealed bearings that resist debris better than the original open-style ones.
• Installation Difficulty: Moderate. You’ll need a socket set, a wrench, and possibly a puller to remove the old spindle. Expect 20–40 minutes per spindle. No special tools required, but a torque wrench is recommended (tighten mounting bolts to 30-35 ft-lbs).
• Common Gotchas: The pulley bolt hole is threaded M10x1.5 – check your pulley bolt matches. Some users note the housing may be slightly thicker than OEM, requiring you to re-drill deck mounting holes on older decks. Also, the included grease fitting is non-functional on some units; ignore it and rely on the sealed bearings.
• Warranty: No warranty details provided – treat as a budget part with no return guarantee after installation.

Should You Buy It

Buy this if you need a reliable, low-cost replacement for a worn Cub Cadet/MTD spindle and you’re comfortable with basic mechanical work. It’s a solid value at $25, especially for older decks where OEM parts cost twice as much. Skip it if you want a guaranteed exact-fit OEM part, or if your deck uses a non-standard spindle shaft diameter or plastic housing.