Mower 54 inch Deck Rebuild Kit for Cub Ca det RZT-L54 RZT-S54 ZT-L54 Troy Bilt TB2454 Craftsman Z6900 Z6600 T310 G8600, 3 Spindle 618-06978 918-06978, 3 Blade 742-05056, 942-05056, 1 Be lt 954-04329

What It Is

This deck rebuild kit contains three spindle assemblies, three blades, and one drive belt—everything needed to fully overhaul a 54-inch fabricated deck on select Cub Cadet, Troy-Bilt, and Craftsman zero-turn mowers. It’s designed for a complete refresh when spindles are worn or blades are dull, saving you from sourcing parts individually.

Fitment & Compatibility

Before buying, verify your mower’s deck is exactly 54 inches wide (measured edge-to-edge). This kit fits Cub Cadet RZT-L54, RZT-S54, ZT-L54; Troy-Bilt TB2454; and Craftsman Z6900, Z6600, T310, G8600 models. The OEM part numbers are 618-06978 (spindle), 742-05056 (blade), and 954-04329 (belt). Check your mower’s model number (stamped on frame or under seat) against these OEM numbers. The blades are 18.25 inches long with a 1-inch center hole and 5-point star drive; the belt is 1/2-inch wide by 141.5 inches long. Not compatible with stamped decks or 46/50/60-inch decks.

Key Things to Know

• Quality varies: Some users report the aftermarket spindles have thinner bearings than OEM; consider greasing them immediately and annually for longevity.
• Installation is moderate: Requires basic tools (socket set, jack stands, grease gun) and about 2–3 hours. You’ll need to remove the deck and possibly a pulley puller.
• Blade orientation: The blades are not universal—ensure the curved edge faces upward toward the deck for proper lift. Also, check blade bolt torque (typically 70–90 ft-lbs).
• Belt routing: The belt included may need slight adjustment; have your mower’s belt diagram handy (often on the deck or in the manual).

Should You Buy It

If your 54-inch Cub Cadet RZT, Troy-Bilt, or Craftsman zero-turn has noisy spindles, uneven cutting, or a worn belt, this kit is a convenient, cost-effective way to restore performance. It’s best for DIYers comfortable with deck removal and basic mechanical work. For commercial or heavy-use mowers, consider OEM spindles for longer life.