918-04456 918-04461 Spindle Assembly Fit for Cub Cadet/MTD/Troy Bilt/Toro 42 Inch Mower Deck LT1042 LX420 LX425, Replaces 618-04456 618-04461 112-0460 (2 Pack)

What It Is

This is a 2-pack of replacement spindle assemblies for the blade drive system on 42-inch mower decks used by Cub Cadet, MTD, Troy-Bilt, and Toro. It transfers power from the belt to the blades; failing spindles cause wobbling, vibration, or blade stoppage.

Fitment & Compatibility

• Deck size: Fits 42-inch decks only—measure your deck width before ordering.
• Brand & models: Cub Cadet LT1042, LX420, LX425; also compatible with MTD, Troy-Bilt, and Toro models using the same deck. Check your machine’s model number (not series name) for exact fit.
• OEM cross-reference: Replaces OEM part numbers 618-04456, 618-04461, and 112-0460. This is an aftermarket part, not OEM Cub Cadet.
• Physical check: Confirm spindle bolt pattern (bolt center-to-center distance) and shaft diameter match your old spindle. Most 42" decks use a 3-bolt pattern with 3/4" shaft, but variations exist.

Key Things to Know

• Quality: Aftermarket; generally good for the price, but housing material may be slightly less durable than OEM. Not for heavy commercial use.
• Installation difficulty: Moderate. Requires removing deck, belt, and blade. You’ll need a socket set, torque wrench, and blade removal tool. Expect 30–60 minutes per spindle.
• Common gotcha: The spindle shaft keyway must align with the pulley key—if it’s off, the pulley won’t seat properly. Also, always replace spindles in pairs (as sold) to maintain even deck balance.
• Lubrication: Some aftermarket spindles come pre-greased; others need grease added before install. Check the packaging.

Should You Buy It

Buy this if you have a 42-inch Cub Cadet, MTD, Troy-Bilt, or Toro with a failing spindle and want a cost-effective, two-pack replacement for DIY repair. Skip it if you need OEM-grade durability for commercial mowing or if your deck uses a different bolt pattern or shaft size.