918-06976 618-06976 Spindle Assembly for MTD Cub Cadet 42" XT1-LT42 XT2-LX42 LT42 LT42C LX42 CYT4220 Replace 618-06976 618-06976A 918-06976A (2 Pack)

What It Is

This is a complete spindle assembly (two-pack) for 42-inch MTD/Cub Cadet mower decks. It replaces the OEM 618-06976, 618-06976A, and 918-06976A part numbers, designed for models like XT1-LT42, XT2-LX42, LT42, LT42C, LX42, and CYT4220.

Fitment & Compatibility

Before buying, confirm your mower deck is 42 inches (measured blade tip to tip) and uses a single-belt spindle design. Check your current spindle’s part number—this set is a direct swap for 618-06976, 618-06976A, or 918-06976A. These are aftermarket replacements, not genuine Cub Cadet OEM, but match dimensions and bolt patterns. Measure the spindle housing height and pulley diameter (typically 4.5–5 inches) to verify. Not compatible with 46-inch or 50-inch decks, or older MTD models with different spindle bolt spacing.

Key Things to Know

• Quality: Pre-greased sealed bearings save time; no need to pack grease. Most users report 2–3 seasons of residential use before replacement.
• Installation: Moderate difficulty—requires removing the deck, belt, blade, and pulley. A 15/16-inch socket and torque wrench (set to 30–40 ft-lbs for blade bolts) are needed. No special tools beyond basic wrenches.
• Gotcha: The spindle shaft may be slightly longer than OEM on some older decks—check blade clearance with the deck shell before final tightening. If blades hit, add a washer under the blade.
• Pack: Two spindles included, but some decks use three spindles (e.g., 42-inch fabricated decks). Verify your deck uses two spindles (one per blade) before buying.

Should You Buy It

Buy this if you have a 42-inch Cub Cadet or MTD with a two-spindle deck and want a reliable, budget-friendly replacement that avoids OEM markup. It’s right for DIY homeowners with moderate mechanical skills; skip it if you need a single spindle or have a three-spindle fabricated deck.