618-06989 918-06989 Spindle Assembly Fit for 46 inch Craftsman T135 T140 T150 T1500 T1600 T1700 T1900 MTD Troy Bilt TB46 Bronco Horse XP Huskee LT 4600 46" Lawn Mower Deck (2 Pack)

What It Is

This is a 2-pack of spindle assemblies designed to mount and spin the cutting blades on 46-inch lawn mower decks. It’s intended for Craftsman, MTD, Troy-Bilt, and Huskee tractors with a stamped-steel 46-inch deck, commonly used on mid-sized residential lawns.

Fitment & Compatibility

Before buying, confirm your mower has a 46-inch stamped deck (not fabricated). This assembly fits models including Craftsman T135, T140, T150, T1500, T1600, T1700, T1900, Troy-Bilt TB46 Bronco, Horse XP, and Huskee LT 4600. It replaces OEM part numbers 618-06989 and 918-06989. Measure your spindle bolt pattern—these use a 4-bolt flange with a 3-inch center-to-center spacing. Check your blade bolt size (typically 5/8-inch). This is an aftermarket part, not genuine OEM, but designed to match original specs. If your deck uses a different spindle height or pulley diameter (e.g., 3.5-inch vs 4-inch pulley), verify clearance before installing.

Key Things to Know

• Quality: Solid aftermarket build with pre-installed bearings and grease fittings. Most users report smooth operation, but inspect the shaft straightness on arrival.
• Installation: Moderate difficulty—requires removing the deck, belt, and blade. Use a torque wrench on the blade bolt (usually 40-60 ft-lbs). The spindle housing bolts to the deck from the top; access may need a socket extension.
• Gotcha: The pulley on these spindles may be a slightly different height than OEM. On some decks, you might need to adjust the belt tension or replace the belt if it’s worn.
• Lubrication: Grease fittings are present—add a few pumps of lithium grease before first use and every 10 hours to extend bearing life.

Should You Buy It

If you have a 46-inch Craftsman or MTD-style deck with a worn or noisy spindle, this 2-pack is a cost-effective fix. It’s ideal for DIY homeowners who want to replace both spindles at once (common when one fails) and avoid dealer pricing. Not for commercial use or decks with non-standard bolt patterns.