618P09236 Spindle Assembly Fits for 54 Inch Decks Cub Cadet ZT1-54 ZT2-54 XT1-ST54 XT1-GT54 ZTS2-54 Craftsman T3200 Z5800 Z7600 Troy Bilt Mustang Z54 54XP Lawn Mower Replaces 618-09236

What It Is

This is a replacement spindle assembly for 54-inch mower decks, designed to mount the blade and transfer power from the belt to cut grass. It fits Cub Cadet ZT1-54, ZT2-54, XT1-ST54, XT1-GT54, ZTS2-54, and compatible Craftsman/Troy-Bilt models with the same deck.

Fitment & Compatibility

• Deck size: 54-inch only. Measure your deck width—this won’t fit 42” or 46” decks.
• Direct OEM replacement: Replaces Cub Cadet part 618-09236. Check your current spindle for that number.
• Models: Works on Cub Cadet ZT1-54, ZT2-54, XT1-ST54, XT1-GT54, ZTS2-54; Craftsman T3200, Z5800, Z7600; Troy-Bilt Mustang Z54, 54XP. Verify your mower’s model number under the seat or deck.
• Measurements: Spindle shaft diameter is typically 5/8” with a 1-1/4” hex top. Confirm bolt pattern matches your deck (usually 3-bolt, 3.5” center-to-center).
• Aftermarket: This is a non-OEM part. It should fit, but check that the bearing housing thickness matches your deck’s spindle mount.

Key Things to Know

• Quality: At $36.99, it’s a budget option. The housing is cast aluminum, bearings are sealed—expect 1-2 seasons under normal use.
• Installation: Moderate difficulty. You’ll need a socket set, wrenches, and a jack to lift the deck. Remove the blade, pulley, and old spindle; torque the new one to 30-40 ft-lbs.
• Common gotcha: The pulley may not match your original—swap the old pulley onto this assembly if the bolt holes don’t align.
• Lubrication: Sealed bearings are pre-greased. Don’t add grease—it can blow the seals.

Should You Buy It

If you need a cheap, direct-fit replacement for a worn spindle on a 54-inch Cub Cadet or compatible deck, and you’re okay with aftermarket quality, this is a solid choice. Avoid it if you want OEM durability or have a non-54-inch deck.