42 Inch Deck Spindle Assembly Fit for Craftsman T110 T130 T1200 T1400 T100 T1000 T1800 Troy Bilt Pony Bronco TB42 Huskee LT4200 Lawn Mower Replaces 918-06991 618-06991 (2 Pack)

What It Is

This is a replacement spindle assembly for 42-inch mower decks, designed for Craftsman, Troy-Bilt, and Huskee lawn tractors. It houses the pulley and blade mount that spins the cutting blade, critical for a clean, even cut.

Fitment & Compatibility

Before buying, confirm your mower has a 42-inch deck and that the spindle matches your model: Craftsman T110, T130, T1200, T1400, T100, T1000, T1800, Troy-Bilt Pony/Bronco TB42, or Huskee LT4200. This is an aftermarket part that replaces OEM numbers 918-06991 and 618-06991. Measure your existing spindle’s bolt pattern (typically 3-bolt, 4-inch spacing) and the shaft diameter (usually 5/8-inch) to verify fit. Also check deck thickness—some older decks use different bolt lengths.

Key Things to Know

• Quality vs. OEM: These are aftermarket spindles, often with sealed bearings. They may be slightly less durable than OEM, but many users report good performance for the price.
• Installation Difficulty: Moderate. You’ll need a jack, socket set, and possibly a puller to remove the old spindle. Expect 30-60 minutes per spindle.
• Common Gotchas: Deck alignment is critical—misaligned spindles cause belt wear and uneven cutting. Also, check blade bolts: these spindles may use a different thread pitch than your original blades.
• Pack Size: This is a 2-pack, so you can replace both spindles at once, which is recommended for balanced wear.

Should You Buy It

If you own one of the listed Craftsman, Troy-Bilt, or Huskee 42-inch deck tractors and need a budget-friendly spindle replacement, this 2-pack is a solid choice for DIY repairs. It’s not for heavy commercial use, but for residential mowing, it offers good value and reliable performance when installed correctly.