42 Inch Rebuild Kit fits MTD Troy Bilt LT4200 M115-42 T1000 T1400 T1800,2 Spindle Replaces 618-06991 918-06991+ 2 Blade 742-04308 742-04312 + Belt 954-05056

What It Is

This is a complete 42-inch deck rebuild kit designed to restore cutting performance on specific MTD and Troy-Bilt lawn tractors. It includes two spindle assemblies, two blades, and a drive belt—everything needed to replace worn-out spindles and refresh the cutting system in one purchase.

Fitment & Compatibility

Before buying, confirm your mower deck is exactly 42 inches wide and that your model is one of these: MTD LT4200, Troy-Bilt M115-42, T1000, T1400, or T1800. The kit replaces OEM spindle part numbers 618-06991 and 918-06991, blades 742-04308 and 742-04312, and belt 954-05056. Measure your existing blade length (should be 21 inches each on a 42-inch deck) and belt length (check your manual for 954-05056 spec). This is an aftermarket kit, not OEM—fitment is specific to listed models, not universal.

Key Things to Know

• Quality varies – With a 4.4 rating from only 7 reviews, inspect spindles for smooth rotation and blade balance before installation. Some aftermarket spindles may have less durable bearings than OEM.
• Moderate DIY install – Requires basic tools (socket set, jack stands, possibly a puller for old spindles). Expect 1–2 hours if you’ve done deck work before; longer for first-timers.
• Check deck condition – If your spindle housings are rusted or bent, the new spindles may not seat properly. Clean mounting surfaces and replace any damaged hardware.
• Blade orientation matters – Blades must be installed with the lift wing facing up toward the deck. Torque spindle bolts to spec (typically 40–50 ft-lbs) to avoid loosening during use.

Should You Buy It

This kit is a solid value if you own one of the listed tractors and need a complete spindle/blade/belt refresh at once. It’s best for DIYers comfortable with basic mechanical work who want to save money over buying OEM parts individually. If you prefer guaranteed OEM fit and longer bearing life, stick with genuine MTD/Troy-Bilt parts—but expect to pay nearly double.