618P09236 618-09236 Lawn Mower Deck Blade Spindle Assembly Compatible with CUB Cadet Enduro XT1-GT54 XT1-ST54, CUB Cadet Ultima ZT1-54 ZT2-54 w/54 Deck(618P09236)

What It Is

The 618P09236 spindle assembly is the rotating hub that drives your mower deck blades. It’s designed for Cub Cadet tractors and zero-turns with a 54-inch deck, replacing worn bearings or bent housings that cause blade wobble or vibration.

Fitment & Compatibility

Before buying, confirm your mower has a 54-inch deck and that your model is listed: Cub Cadet Enduro XT1-GT54, XT1-ST54, Ultima ZT1-54, or ZT2-54. This is an aftermarket part, not OEM Cub Cadet. Measure the spindle mounting bolt pattern (typically 4 bolts on a ~3.5-inch square pattern) and spindle shaft diameter (should be 5/8-inch) to verify. Also check your deck’s spindle height—this assembly is about 6.5 inches tall. If your deck uses a different pulley size (e.g., 4-inch vs. 4.5-inch), you may need to swap your existing pulley onto this spindle.

Key Things to Know

• Quality note: With only 2 reviews and a 4.2 average, long-term durability is unproven. Some users report bearings lasting one season under heavy use.
• Installation difficulty: Moderate. You’ll need a socket set, wrenches, and a jack to support the deck. Expect 45–90 minutes.
• Common gotcha: The spindle housing may not include a grease fitting. If your OEM one had one, consider adding a greaseable replacement for longer life.
• Deck removal required: You must remove the deck to access the spindle. Mark belt routing before disassembly.

Should You Buy It

This is a budget-friendly option if you’re handy and your OEM spindle is out of warranty. It’s best for occasional residential use on a 54-inch Cub Cadet, but if you mow commercially or want guaranteed longevity, stick with an OEM Cub Cadet spindle (part #918-04360).