ILONPA (3 Pack) Spindle for MTD Cub Cadet Troy Bilt 618-04125A, 618-04126A, 918-04125B, 918-04126, 918-04126B, 618-04126, 918-04126A and 918-04125A Toro 112-0370 i1050 GT2100 GT2200 LX500

What It Is

This is a 3-pack of replacement spindle assemblies for zero-turn and lawn tractor decks, designed to mount the blade and enable rotation. It’s intended for MTD, Cub Cadet, Troy-Bilt, and Toro models with 42–54-inch fabricated or stamped decks.

Fitment & Compatibility

Before buying, confirm your deck’s OEM spindle part number. This set replaces: 618-04125A, 618-04126A, 918-04125B, 918-04126, 918-04126B, 618-04126, 918-04126A, 918-04125A, and Toro 112-0370. It fits Cub Cadet GT2100, GT2200, LX500, i1050, and similar zero-turns like the Toro TimeCutter and Titan models. Measure the spindle housing bolt pattern (center-to-center) and shaft diameter (usually 1 inch) to match your deck. Check that your blade’s center hole and drive belt pulley match—this spindle uses a standard 5/8-inch hex shaft and a 3.5-inch pulley. Aftermarket, not OEM; verify deck thickness (up to 0.125 inch) for proper fit.

Key Things to Know

• Quality: All-metal housing with sealed bearings; holds up to residential and light commercial use, but not heavy-duty commercial abuse.
• Installation: Moderate difficulty—requires removing deck, pulley, and blade. Use a puller for stubborn spindles; torque spindle bolts to 30–40 ft-lbs.
• Gotcha: The 3-pack may include one spindle with a slightly different pulley height (0.5 inch variance). Check all three for alignment before tightening.
• Gotcha: Grease fittings are present but not pre-filled—pack with lithium grease before install to extend bearing life.

Should You Buy It

If you have a Cub Cadet, Troy-Bilt, or Toro with a failed spindle (wobble, noise, or blade imbalance), this 3-pack is a solid value for the price. It’s best for DIY homeowners replacing all three spindles at once for even wear, but skip it if you need exact OEM fitment for a commercial deck or a specific pulley height.