42" Deck 918-04822A Spindle Rebuild Kit for Cub Cadet LTX1040 LTX1042, for MTD RZT 42, Includes 2 Spindles 618-04822A with Pulley, 2 Blades 742-04308, 2 Idlers 756-04129, 1 96 1/2" Belt 754-04060

What It Is

This is a complete spindle rebuild kit for 42-inch cutting decks on Cub Cadet LTX1040/LTX1042 and MTD RZT 42 zero-turn mowers. It includes two spindle assemblies with pulleys, two blades, two idler pulleys, and a 96.5-inch drive belt—everything needed to replace worn spindles and refresh the entire deck drive system in one purchase.

Fitment & Compatibility

Before buying, verify your mower has a 42-inch fabricated or stamped deck—this kit is not for 46- or 50-inch decks. Match the OEM part numbers: spindles (618-04822A), blades (742-04308), idlers (756-04129), and belt (754-04060). It fits Cub Cadet LTX1040, LTX1042, and MTD RZT 42 models, but also works on many MTD/Cub Cadet/John Deere 42-inch decks using those same part numbers. Measure your belt length: the included belt is 96.5 inches—if your deck uses a different length, you’ll need a separate belt. Check that your deck has two spindles (not three) and that the blade bolt pattern is 5-point star (common on these decks).

Key Things to Know

• Quality: Kits are OEM-equivalent or genuine Cub Cadet; spindles are cast iron with sealed bearings, but some users report bearings can wear faster than OEM if used in heavy debris or wet grass.
• Installation difficulty: Moderate. You’ll need a socket set, torque wrench (spindle bolts to 40-50 ft-lbs), and possibly a puller for stubborn old spindles. Expect 1-2 hours for a first-timer.
• Common gotcha: The idler pulleys may have different bolt sizes (3/8 or 5/16) than your old ones—check before installing. Also, the belt may require deck removal or tensioner release to route correctly.
• Blades included: 742-04308 blades are 15.5 inches long, 2.5 inches wide, with a 5-point star center hole—verify your deck uses this blade size, not a different length or hole pattern.

Should You Buy It

Buy this kit if you own a Cub Cadet LTX1040/LTX1042 or MTD RZT 42 with a 42-inch deck and need to replace worn, noisy, or wobbling spindles—it’s a cost-effective all-in-one solution that saves buying parts separately. Skip it if your spindles are fine and you only need blades or a belt, or if your deck uses non-standard spindle or blade part numbers.