MOCW 618-09236 618P09236 Spindle Assembly for Cub Cadet for MTD Craftsman Troy Bilt XT1 GT54 ST54 Z5800 Z7600 T3200 Mustang 54XP 54-Inch

What It Is

This is a replacement spindle assembly for the 54-inch cutting decks found on select Cub Cadet, MTD, Craftsman, and Troy-Bilt zero-turn and lawn tractors. It houses the bearings and pulley that spin the blade, and it’s designed to bolt directly onto the deck spindle mount.

Fitment & Compatibility

Before buying, confirm your deck has a 54-inch cutting width and that your model is listed: Cub Cadet XT1, GT54, ST54, Z5800, Z7600, T3200, or Mustang 54XP. Also fits certain MTD, Craftsman, and Troy-Bilt models using the same 54-inch deck. This is an OEM replacement (part #618-09236, 618P09236), not an aftermarket universal. Measure the spindle bolt pattern (typically 3-bolt, 4.5-inch center-to-center) and verify the shaft diameter (usually 5/8-inch) and pulley size match your original. Check your deck’s model/serial tag, not just the tractor model, to confirm the deck part number.

Key Things to Know

• Quality: OEM-grade; bearings are sealed and pre-lubricated. Expect similar lifespan to the factory part—typically 2–3 seasons with normal use.
• Installation: Moderate difficulty. You’ll need a socket set, a torque wrench (tighten pulley nut to 40–50 ft-lbs), and possibly a puller to remove the old spindle. Expect 30–60 minutes per spindle.
• Gotcha: The pulley is not included—you must reuse your existing pulley or buy one separately. Also, the blade bolt may be reverse-threaded on some decks; check your manual.
• Common issue: If your deck has a bent spindle housing, this replacement won’t fix vibration—inspect the housing before ordering.

Should You Buy It

Buy this if you own a compatible 54-inch Cub Cadet, MTD, Craftsman, or Troy-Bilt mower and need a direct OEM replacement without hunting for aftermarket fits. It’s a solid choice for a straightforward spindle swap on a mid-to-large residential or light-commercial deck. Avoid if your deck model isn’t listed or if you need a spindle for a different width.