Aeagle 54" Spindle Assembly 3-Pack for 54-inch Mower Decks — Direct-Fit, Pre-Assembled Sealed Bearings

Replacement 54-inch spindle assemblies (3-pack) designed to restore mower deck rotation and fit a wide range of Cub Cadet, Troy-Bilt, Craftsman, MTD and compatible models.

These Aeagle ZT1-54 spindle assemblies are engineered as direct-fit service parts for many 54" mower decks that use part references like 918-06978 and 618-06978. Each spindle comes pre-assembled for faster installation, helping you get your zero-turn or lawn tractor back to cutting performance without modifying the deck. The listing covers compatibility across several brands and model families—check the model list to confirm fit before purchase.

What models and part numbers will these spindles replace?

These spindles are manufactured to match original-style 54" deck spindle assemblies commonly indexed as 918-06978 and 618-06978. They were created to be compatible with many Cub Cadet, Troy-Bilt, Craftsman, MTD and related decks produced in the 2010s and later.

• Replaces OEM references: 918-06978 and 618-06978.
• Fits many Cub Cadet models with 54" decks, including select RZT, XT1 and XT2 series (confirm year fitment).
• Compatible with Troy-Bilt 54" tractors such as TB2454 and Mustang XP series.
• Also fits Craftsman and MTD 54" deck models listed by similar OEM part numbers.

How easy is installation and what tools will I need?

Each spindle assembly ships pre-assembled so you avoid pressing bearings or rebuilding the housing. Installation typically involves unbolting the old spindle from the deck, transferring the blade and pulley if necessary, and bolting the new unit in place.

• Basic tools: socket set, torque wrench, screwdrivers, and possibly a breaker bar.
• Time estimate: usually 45–90 minutes per spindle for a DIY mechanic.
• Follow factory torque specs and safety procedures when reinstalling blades.

What features and durability can I expect from these assemblies?

Aeagle spindles are built to withstand deck loads typical of heavy grass and normal yard debris, with reinforced housings and sealed bearings for extended service life. They are designed to maintain alignment and provide smooth rotation under load.

• Sealed bearings to help resist dirt and moisture intrusion.
• Robust spindle shaft and mounting flange to reduce flex under cut loads.
• Pre-assembled for immediate use—no pressing or packing required.

Will these spindles work on my specific mower year or deck variant?

Fitment depends on deck bolt pattern, shaft diameter and spindle height. The product fits many year ranges of listed models but not every variant—some model subtypes and years use different spindles.

• Verify part numbers 918-06978 / 618-06978 against your mower's service manual.
• Compare mounting hole spacing and shaft size with your current spindle before ordering.
• Contact customer support with deck photos or serial numbers if unsure.

Who is this for: This three-pack is aimed at homeowners, landscapers and repair shops who maintain multiple 54" decks or want spare spindles for quick field swaps. It's ideal for anyone restoring cutting performance on compatible Cub Cadet, Troy-Bilt, Craftsman, MTD and related machines who prefers a pre-assembled, ready-to-install replacement that matches common OEM references.