918-06991 Spindle Assembly Replaces 618-06991, 918 06991, 91806991, 618 06991, 61806991 for Huskee LT4200 T1000 T1200 T1400 TB42, Craftsman T110 T130, Troy Bilt Bronco 42, Pony 42 Tractors

What It Is

This is a replacement spindle assembly for the cutting deck of riding lawn mowers. It houses the bearings and pulley that spin the blade, and is designed for 42-inch decks on select Husky, Craftsman, and Troy-Bilt tractors.

Fitment & Compatibility

• Deck size: Only fits 42-inch decks. Measure your deck width before buying.
• Models: Confirmed for Huskee LT4200, T1000, T1200, T1400, TB42; Craftsman T110, T130; Troy-Bilt Bronco 42 and Pony 42.
• OEM vs aftermarket: This is an aftermarket replacement for OEM part numbers 618-06991, 918-06991, 91806991, 61806991. It’s a direct fit, not a universal.
• Measurements: Check spindle shaft diameter (typically 3/4-inch) and bolt pattern (usually 4-bolt, 3-inch center-to-center). If your original spindle has a different pulley diameter (e.g., 4.5-inch vs 5-inch), this part may not match.

Key Things to Know

• Quality: Made with steel housing and sealed bearings. Holds up well for residential use. Some users report shorter life than OEM if used on heavy commercial loads.
• Installation difficulty: Moderate. Requires removing the deck, unbolting the old spindle, and transferring the pulley and blade. Basic hand tools and a socket set needed.
• Common gotcha: The pulley is not included. Reuse your original pulley or buy a new one if worn. Also check the blade bolt torque (usually 70-90 ft-lbs).
• Warranty: Typically 90-day limited. Not a huge risk at this price point.

Should You Buy It

If you have a 42-inch deck on a Husky, Craftsman, or Troy-Bilt tractor and need a direct-fit, affordable spindle, this is a solid choice for weekend mowing. Skip it if you run a commercial mowing operation—you’ll want OEM for longer life.