918-06991 Greaseable Spindle Assembly Fit for Troy Bilt Pony Mower Compatible with MTD Huskee Craftsman T1000 T1200 Deck Mower, Troy Bilt TB42 TB2246 Bronco 42" Tractor, Replace 618-06991

What It Is

This is a greaseable spindle assembly for the cutting deck of Troy-Bilt, MTD, Huskee, and Craftsman lawn tractors. It supports the blade and allows you to add grease via a zerk fitting to extend bearing life—ideal for 42-inch decks on residential riding mowers.

Fitment & Compatibility

Check before buying:

• Deck size: Fits 42-inch decks on Troy-Bilt Pony, TB42, TB2246, Bronco; Craftsman T1000, T1200; MTD and Huskee equivalents.
• OEM part number: Replaces OEM 618-06991. Confirm your current spindle matches this number.
• Bolt pattern: Four-bolt mount with 3-inch center-to-center spacing (common on MTD-style decks).
• Shaft diameter: 5/8-inch shaft with a 1-inch blade retention bolt. Measure your blade hole and spindle shaft before ordering.
• Housing shape: Round housing, approximately 3.5 inches diameter. Verify clearance in your deck’s spindle pocket.

Non-fitment: Not for zero-turn mowers, 46-inch+ decks, or older Murray/John Deere models.

Key Things to Know

• Greaseable design: Has a zerk fitting on top—use a grease gun every 10–15 hours of mowing to prevent premature bearing failure. Non-greaseable spindles are common on cheaper OEM parts; this upgrade saves replacements.
• Installation difficulty: Moderate. Requires removing the deck, unbolting the old spindle (4 bolts), swapping the pulley and blade, and torquing the blade bolt to 40–50 ft-lbs. A puller may be needed if the old spindle is seized.
• Quality note: Aftermarket part with solid reviews (4.9/5 from 8 ratings). Likely comparable to OEM, but check for burrs on the shaft or housing before install—lightly file if needed.
• Common gotcha: The included hardware may not match your pulley’s center hole. Use your existing pulley bolt if it’s different. Also, ensure the blade bolt is thread-locked and torqued properly to avoid loosening during use.

Should You Buy It

If you own a Troy-Bilt, Craftsman, or MTD 42-inch tractor and your spindle is worn, noisy, or leaking grease, this is a direct, low-cost replacement. It’s especially good if you want the greaseable feature to extend service life—worth it for DIY owners who maintain their own equipment. Skip it if you need a zero-turn or larger deck spindle.