54" Deck Mower Rebuild Kit for Cub Cadet RZT-S54 RZT-L54 RZT-LX54 XT1-ST54 XT2-GX54 XT2-54 ZT1-54 Craftsman Z6600 G8400 Troy Bilt T310 ZT-L54 Includes 3 Spindles 918-06978 3 Blades 942-05056

What It Is

This is a complete 54-inch deck rebuild kit for select Cub Cadet, Craftsman, and Troy-Bilt zero-turn and lawn tractors. It includes three spindle assemblies (part 918-06978) and three blades (part 942-05056) to replace worn-out cutting components and restore deck performance.

Fitment & Compatibility

Before buying, verify your deck is exactly 54 inches – measure from blade tip to blade tip. This kit fits models with OEM part numbers 918-06978 (spindles) and 942-05056 (blades). Compatible machines include:

• Cub Cadet: RZT-S54, RZT-L54, RZT-LX54, XT1-ST54, XT2-GX54, XT2-54, ZT1-54
• Craftsman: Z6600, G8400
• Troy-Bilt: T310, ZT-L54

Check your deck’s spindle mounting pattern – these are aftermarket replacements, not OEM. Measure bolt hole spacing (commonly 3.25” or 3.5” center-to-center) and spindle shaft diameter (typically 5/8” or 3/4”). If your deck uses different spindles (e.g., 918-06977), this kit won’t fit.

Key Things to Know

• Installation difficulty: Moderate – requires removing the deck, unbolting old spindles, and transferring pulleys. Have a socket set, torque wrench, and penetrating oil ready.
• Quality note: Aftermarket spindles may have plastic vs. metal housings. Check if bearings are sealed and greasable. Blades are standard OEM-style replacements.
• Common gotcha: Pulley bolts are often seized – use heat or a breaker bar. Also, ensure blade orientation (air lift side up) to avoid poor cut or vibration.
• Kit completeness: Includes spindles and blades only. You may need new deck belt(s), pulleys, or hardware (lock washers, nuts) depending on wear.

Should You Buy It

Buy this kit if your 54-inch Cub Cadet, Craftsman, or Troy-Bilt deck has noisy, wobbly spindles or dull/chipped blades, and you want a single, cost-effective refresh. It’s a solid value for DIYers comfortable with moderate mechanical work, but skip it if you need OEM-specific parts or your deck has non-standard spindle spacing.