8TEN Mower Spindle for Cub Cadet MTD LT1045 LT1046 i1046 618-0660 918-0625B 918-0660A

What It Is

This is a replacement mower spindle assembly for select Cub Cadet and MTD lawn tractors. It houses the bearings and shaft that drive the blade, so when yours gets noisy, wobbly, or seizes, swapping this part restores smooth cutting.

Fitment & Compatibility

Check your model numbers first. This spindle fits Cub Cadet LT1045, LT1046, and i1046, plus many MTD equivalents. The OEM cross-references are 618-0660, 918-0625B, and 918-0660A. Measure your spindle housing height — this one is about 4.25 inches tall with a 1-inch shaft diameter and a 3/4-inch hex blade mount. Verify your deck has three bolts on 3-inch centers. It will not fit decks with a different bolt pattern or shaft size (e.g., 1-inch hex or 5/8-inch shaft). If your old spindle has a grease fitting, this one does too — so no adapter needed.

Key Things to Know

• Build quality is solid for the price. The bearings are sealed and pre-lubed; many users report lasting 2–3 seasons under normal residential use.
• Install is straightforward — unbolt the old spindle from the deck, swap the pulley and blade (use Loctite on the blade bolt), and bolt the new one in. No special tools beyond a socket set and a torque wrench (blade bolt to 40–50 ft-lbs).
• Watch for stripped threads on the blade bolt. The spindle comes with a new bolt, but if your blade is stuck, penetrating oil and a breaker bar are your friends. Don’t reuse the old bolt.
• Not for zero-turn or commercial mowers — this is a budget-friendly residential part. If you mow more than 2 acres weekly, consider a heavier-duty OEM spindle.

Should You Buy It

If you’ve got a Cub Cadet LT1045, LT1046, or i1046 with a worn or noisy spindle, this is a reliable, cost-effective fix. It matches OEM specs, includes the necessary hardware, and has good user feedback. Skip it if you need a commercial-grade part or have a different deck pattern — measure first.