46" Deck Rebuild Kit Fit for Craftsman T1600 T1900, for MTD LT 4600 T135 T140 T150 T1500 T1600 T1900 T2600, 2 Spindle Assemblies 618-06989 918-06989, 2 Pulleys, 2 Blades, 1 Deck Belt (103 1/4" x 1/2")

What It Is

This is a complete 46-inch deck rebuild kit for Craftsman and MTD lawn tractors, containing two spindle assemblies, two pulleys, two blades, and one deck belt. It’s designed for a full deck overhaul on models like the T1600, T1900, and MTD LT 4600.

Fitment & Compatibility

Before buying, confirm your mower deck is exactly 46 inches wide (measured blade tip to blade tip). This kit fits Craftsman T1600, T1900, and MTD LT 4600, T135, T140, T150, T1500, T1600, T1900, T2600. The spindles are OEM replacements for part numbers 618-06989 and 918-06989. The belt is 103 1/4 inches long by 1/2 inch wide—measure your old belt length and width to verify. This is an aftermarket kit, not OEM Craftsman, but uses standard MTD-compatible parts. Double-check your deck’s spindle bolt pattern (typically 3-bolt) and blade center hole size (usually 5/8 inch or 7/16 inch).

Key Things to Know

• Quality concerns: Some users report spindle bearings may be noisier or wear faster than OEM. Inspect for smooth rotation before install.
• Installation difficulty: Moderate. You’ll need basic tools (socket set, torque wrench, jack stands) and about 1-2 hours. Removing old spindles can be tough if rusted.
• Common gotchas: The blades may need balancing after install. The belt routing must match your deck diagram—misrouting causes poor cutting or belt slip. Torque spindle bolts to manufacturer specs (typically 30-40 ft-lbs).
• Kit completeness: Includes everything for a full deck rebuild, but you may need new deck washers or anti-scalp wheels separately.

Should You Buy It

If your 46-inch Craftsman or MTD deck has worn spindles, dull blades, or a stretched belt, this kit offers good value for a complete refresh at about $77. It’s best for DIYers comfortable with moderate mechanical work who want to avoid buying parts individually. Skip it if you prefer OEM durability or need only one spindle—buying separate OEM parts may be more reliable for long-term use.