ILONPA (2 Pack 618-06991 918-06991 42 inch Deck Mower Spindle Assembly Replaces for Troy Bilt MTD Craftsman T1000 T1200 T1400 T1800 TB42 TB2246, for Huskee LT4200 Bronco Tractor

What It Is

This is a 42-inch deck mower spindle assembly (2-pack) that drives the blades on select Troy-Bilt, MTD, Craftsman, and Huskee lawn tractors. It replaces OEM part numbers 618-06991 and 918-06991 and is designed for machines with 42-inch stamped steel decks.

Fitment & Compatibility

Check these before buying:

• Deck size: Must be exactly 42 inches (measure deck width, not model number).
• OEM cross-reference: Fits 618-06991, 918-06991, 618-06991A, 918-06991A, 618-06991B, 918-06991B.
• Machine models: Works on Craftsman T1000, T1200, T1400, T1800, TB42, TB2246; Troy-Bilt TB42, Bronco; Huskee LT4200, LT4600; MTD 760-series. Not for 46-inch or 54-inch decks.
• Physical dimensions: Spindle shaft is 7/8-inch diameter, housing is 2-3/4 inches tall. Measure your old spindle height and shaft diameter to confirm.
• Mounting holes: 4-bolt pattern with 3-1/4-inch spacing – verify against your deck’s bolt pattern.

Key Things to Know

• Quality: Aftermarket part with mixed reviews – some report shorter bearing life than OEM. Inspect for smooth rotation and no wobble before installing.
• Installation difficulty: Moderate. Requires removing the deck, belt, blade, and pulley. You’ll need a socket set, torque wrench, and possibly a puller for stuck pulleys.
• Common gotchas: The included bolts may be slightly different thread pitch than OEM – keep your original bolts if they fit. Grease fittings are present, so use a grease gun during installation and every 25 hours of use.
• Warranty: No extended warranty – if it fails early, replacement is through the seller’s return window only.

Should You Buy It

Buy this if you have a 42-inch deck Troy-Bilt, Craftsman, or Huskee tractor and need a budget-friendly spindle replacement for a single season or light use. Skip it if you mow commercially, need OEM reliability, or have a deck size other than 42 inches – in those cases, spend more on OEM or a premium aftermarket brand.