3Pack Deck Spindle 618-09256 618P09256 Replacement for Cub Cadet ZT1-50 ZT2-50 Troy Bilt Mustang Z50 MTD Craftsman Z5600 Z5650, with 50-Inch Deck Mowers

What It Is

This is a set of three replacement deck spindles (part #618-09256 / 618P09256) designed for 50-inch mower decks. Spindles connect the blade to the belt drive and must spin freely for clean cuts. These fit Cub Cadet ZT1-50, ZT2-50, Troy-Bilt Mustang Z50, MTD, and Craftsman Z5600/Z5650 models with a 50-inch deck.

Fitment & Compatibility

Before buying, confirm these three things:

1. Deck size must be exactly 50 inches – these spindles will not fit 46-inch or 54-inch decks.
2. Check your model number – fits Cub Cadet ZT1-50 (models 17WFB, 17WFC), ZT2-50, Troy-Bilt Mustang Z50, Craftsman Z5600, Z5650, and many MTD 50-inch zero-turn mowers. Verify your exact model on the manufacturer’s site or your owner’s manual.
3. OEM vs aftermarket – this is an aftermarket replacement for OEM Cub Cadet part 618-09256. It should match factory dimensions (bearing bore, bolt pattern, shaft diameter), but measure your old spindle’s shaft length and pulley bolt pattern to be safe. If you have a stamped steel deck vs fabricated deck, confirm the spindle housing height matches.

Key Things to Know

• Quality is solid for the price – buyers report sealed bearings and good metal housing. Not as heavy-duty as OEM, but fine for residential use.
• Installation is moderate – you’ll need a socket set, a puller for the old spindle, and possibly a torque wrench. Expect 45–90 minutes for all three if you’ve done it before.
• Common gotcha – the pulley nut can be very tight on old spindles. Use penetrating oil and an impact gun if available. Also, the new spindles may come with a different pulley bolt pattern – check before reassembly.
• Buy a set of three – if one spindle fails, the others are likely close behind. Replacing all at once saves labor.

Should You Buy It

If you own a Cub Cadet, Troy-Bilt, MTD, or Craftsman zero-turn with a 50-inch deck and need to replace worn or noisy spindles, this three-pack is a cost-effective choice. It’s best for residential use where you don’t need commercial-grade durability. Just verify your exact model and deck size first, and expect a straightforward DIY job.