Parts Camp 3-Pack Spindle Assemblies for 50-54 in Decks — 5.38in Pulley, Sealed Bearings

Parts Camp 3-Pack 918-04125C spindle assemblies with pre-installed 5.38" pulleys replace multiple OEM parts to restore smooth blade rotation on 50" and 54" riding mower decks.

If your Cub Cadet, MTD, Troy-Bilt or Craftsman mower is producing uneven cuts, loud vibration, or a wobbling blade, worn spindle assemblies are often the culprit. This boxed set includes three fully assembled spindles engineered to match common OEM dimensions, with sealed, pre-greased bearings and self-tapping mounting bolts to speed up replacement. Built with an aluminum housing and a 6-point star blade interface, these spindles aim to deliver stable, quieter operation and long service life so you can get your deck back to reliable mowing performance.

Will these spindles fit my mower model?

These Parts Camp spindles are designed to be compatible with many popular walk-behind and zero-turn riding mowers that use 50-inch or 54-inch decks. They replace several OEM numbers across MTD, Cub Cadet, Troy-Bilt and Craftsman families, covering a wide range of model years and platform codes.

• Replaces OEM 618-04125A, 618-04126A, 918-04125B, 918-04126, 918-04126B, 618-04126, 918-04126A, 918-04125A
• Fits Cub Cadet models such as LGTX1050, LGT1050, LTX1050KW, LGTX1054, SLT1554, RZT50 series
• Fits MTD models like Columbia GT5024/GT5025, ZT-L50, ZT50, and select Q-series
• Also compatible with Craftsman ZTL7000 (2012) and White Outdoor ZT-50 variants

How easy is it to install these spindle assemblies?

The kit includes self-tapping mounting bolts and comes pre-assembled so most installers can replace a spindle with common hand tools in one to two hours per spindle. The six-point star center hole aligns directly with blade adapters, minimizing setup adjustments.

• Includes four self-tapping bolts per spindle for secure deck mounting
• Pre-installed pulley and sealed bearings reduce pre-install prep time
• Standard 6-point blade interface fits common blade adapters without modification
• Clearance and bolt pattern match OEM geometry for straightforward swap

What materials and features affect longevity and performance?

Durability comes from a lightweight yet strong aluminum housing combined with pre-greased, sealed bearings that resist dirt and moisture. The included pulley is sized at 5.38" diameter to match belt routing and maintain proper blade speed for an even cut.

• Aluminum housing for corrosion resistance and heat dissipation
• High-grade sealed bearings pre-packed with grease to reduce maintenance
• 5.38" diameter pulley for correct belt alignment and smooth rotation
• Designed to reduce vibration and mechanical noise under load

Can I replace just one spindle or should I replace multiple at once?

Replacing one worn spindle can restore function, but swapping all spindles on a deck helps preserve uniform blade height and balance. This three-pack offers value for owners of multi-spindle decks or those who prefer to replace adjacent spindles at the same time for consistent performance.

• Three spindles in the pack support many 50" or 54" decks with multiple blades
• Matching new parts reduce imbalance and uneven wear across blades
• Buying a set can lower per-spindle cost compared to single units

Who is this for: The Parts Camp 3-pack spindle assembly suits do-it-yourself homeowners, small property managers, and independent mower technicians who maintain mid-size riding tractors and zero-turn mowers. If you own a 50" or 54" deck from Cub Cadet, MTD, Troy-Bilt or Craftsman and want a direct-replacement spindle with sealed bearings, pre-installed pulleys, and hardware included, this kit is tailored for efficient, reliable deck repairs without costly dealership downtime.