Spindle Fit for Troy Bilt Pony Mower - 918-06991 Spindle Assembly Fit for MTD Huskee Craftsman T1000 T1200 Mower and Troy Bilt TB42 TB2246 Bronco 42" Tractor, Replace 618-06991, 2 Pack

What It Is

This spindle assembly is the rotating hub that drives the mower blade on your lawn tractor. It’s designed for 42-inch deck Troy-Bilt Pony, Bronco, TB42, TB2246, and compatible MTD, Huskee, and Craftsman T1000/T1200 mowers.

Fitment & Compatibility

Before buying, confirm your deck size is exactly 42 inches. This spindle fits most MTD-built 42” decks on Troy-Bilt, Craftsman, and Huskee tractors, but it does not fit 46” or 50” decks. Check your original part number: this replaces 918-06991, 618-06991, and 918-06991A. Measure the spindle shaft diameter (typically 5/8”) and the bolt pattern (usually 4-bolt, 2.5” center-to-center). If your deck has a different spindle housing depth or uses a different bearing size, this won’t work. Always verify your model number against the seller’s compatibility list—many MTD decks from 2000–2020 use the same spindle, but not all.

Key Things to Know

• Quality: Aftermarket part, but rated well (4.6 stars, 688 reviews). Typically includes bearings pre-installed—no pressing needed. Some users report slightly shorter bearing life vs OEM, but for the price, it’s a solid value.
• Installation: Moderate difficulty. You’ll need a socket set, a jack to lift the deck, and possibly a puller if the old spindle is seized. Expect 30–60 minutes per spindle.
• Common gotcha: The replacement spindle may have a different grease fitting orientation or a slightly different pulley bolt pattern. Check your old pulley’s bolt spacing—some aftermarket spindles require reusing your original pulley or buying a new one.
• Pack: Comes as a 2-pack, so you can replace both spindles at once. If only one is bad, you have a spare.

Should You Buy It

Yes, if you own a 42” deck Troy-Bilt Pony, Bronco, TB42, TB2246, or a compatible MTD/Craftsman tractor and want a reliable, budget-friendly replacement. It’s a good choice for DIYers who don’t want to pay OEM prices. Skip it if you need a perfect OEM match or have a non-standard deck—verify fitment first.