8TEN Mower Spindle for Cub Cadet Craftsman LTX 1042 1040 i1042 ZTT42 Revolution 42-Inch Deck 918-04512B 618-04512

What It Is

The 8TEN Mower Spindle is a replacement spindle assembly designed for 42-inch cutting decks on select Cub Cadet, Craftsman, and MTD-brand lawn tractors and zero-turn mowers. It drives the blade rotation and supports the blade housing, critical for consistent, vibration-free cutting.

Fitment & Compatibility

Before buying, verify these specifics:

• Deck size: Fits only 42-inch decks (not 46-inch or 50-inch).
• Models: Confirmed for Cub Cadet LTX 1040, LTX 1042, i1042, ZTT42, and Revolution; also Craftsman LTX 1042 and similar MTD-built units.
• OEM cross-reference: Replaces Cub Cadet/Craftsman OEM part numbers 918-04512B and 618-04512.
• Measurements: Overall spindle height is approximately 5.5 inches; mounting bolt pattern is 3 inches center-to-center. Measure your existing spindle to confirm.
• Deck type: Works with stamped steel 42-inch decks common on these models. Not for fabricated decks.

Key Things to Know

• Quality vs OEM: 8TEN is an aftermarket brand. Build quality is generally good but may have slightly less precise bearings than OEM. Inspect shaft for straightness upon arrival.
• Installation difficulty: Moderate. Requires removing the deck, blade, pulley, and old spindle. A puller tool may be needed for seized spindles. Torque blade bolts to 40-50 ft-lbs.
• Common gotchas: The spindle shaft may be slightly shorter than OEM on some units—check blade clearance with deck shell. Also, ensure pulley matches your belt width (typically 3/8-inch or 1/2-inch).
• Warranty: Typically includes a 1-year limited warranty; retain receipt.

Should You Buy It

If you need a budget-friendly replacement for a 42-inch Cub Cadet or Craftsman deck and are comfortable with moderate DIY installation, this spindle is a solid value at $68.95. It’s best for older machines where OEM cost isn’t justified. For commercial use or critical fit, consider OEM to avoid potential vibration or shorter lifespan.