618-06976 918-06976 Spindle Assembly Fit for 42 inch Deck Cub Cadet XT1 LT42 XT2 LX42 XT1-LT42 XT2-LX42 CYT4220 SE Craftsman T8000 Lawn Mower Replaces OEM MTD 618-06976A 918-06976A (2 Pack)

What It Is

This is a two-pack of spindle assemblies designed to replace the mower deck spindles on 42-inch cutting decks for select Cub Cadet, Craftsman, and MTD lawn tractors. Spindles connect the blade to the deck drive system and must spin freely for clean, even cuts.

Fitment & Compatibility

Check these before buying:

• Deck size: Only fits 42-inch decks. Measure your deck width to confirm.
• Model compatibility: Verified for Cub Cadet XT1 LT42, XT2 LX42, XT1-LT42, XT2-LX42, CYT4220 SE, and Craftsman T8000. Also fits some MTD-built decks with the same spindle pattern.
• OEM replacement: Replaces MTD OEM numbers 618-06976A and 918-06976A. If your spindle has a different number, measure the spindle housing height (approx. 4.5 inches), bolt pattern (3-bolt, 3.25-inch center-to-center), and shaft diameter (0.625 inch).
• Common gotcha: Some decks use a shorter or taller spindle. Measure your existing spindle height before ordering.

Key Things to Know

• Quality: Aftermarket part at a lower price than OEM. Most users report good durability, but some note bearings may need grease before installation.
• Installation difficulty: Moderate. Requires removing the deck, unbolting the old spindle, and transferring the blade pulley and blade. Basic hand tools and a socket set are needed.
• Common issues: The spindle shaft may have a slight burr from manufacturing—file it smooth before installing the blade. Also, the included hardware may not match your original bolts; reuse your OEM hardware if possible.
• Two-pack value: Buying the pair saves money if you need to replace both spindles. If only one is bad, you’ll have a spare.

Should You Buy It

Buy this if you have one of the listed 42-inch Cub Cadet or Craftsman models and need to replace one or both spindles without paying OEM prices. It’s a solid budget-friendly option for DIY repairs, but double-check your spindle height and bolt pattern to avoid fitment issues.