ACEBRI 618-06989 918-06989 Spindle Assembly 46 Inch for Craftsman T135 T140 T150 T1500 T1600 T1700 T1900 for MTD TB46 for Huskee LT 4600 46" Lawn Mower Deck

What It Is

This is a replacement spindle assembly for 46-inch lawn mower decks, designed to mount the blade and drive it via the belt. It fits Craftsman T-series tractors, select MTD and Huskee models, and is commonly used when the original spindle seizes or wobbles.

Fitment & Compatibility

Before buying, confirm these three things:

• Deck size: Must be a 46-inch deck (not 42- or 54-inch). Measure deck width if unsure.
• Model number: This assembly replaces OEM part numbers 618-06989 and 918-06989. It fits Craftsman T135, T140, T150, T1500, T1600, T1700, T1900, MTD TB46, and Huskee LT 4600. Check your mower’s model tag under the seat or on the frame.
• Physical check: The spindle has a 1-inch diameter shaft with a 5/8-inch keyway and uses two 5/16-inch mounting bolts. Measure your old spindle’s shaft length (typically ~3.5 inches) and bolt pattern (center-to-center ~3 inches) to verify match.

This is an aftermarket part, not OEM Craftsman. It should bolt directly on, but confirm your deck uses a standard solid spindle (not a quick-change or stamped housing type).

Key Things to Know

• Quality: Most users report it’s a solid replacement for the price—comparable to OEM in durability. However, 2 reviews means long-term reliability is unproven.
• Installation difficulty: Moderate. You’ll need a socket set, a jack to raise the mower, and possibly a puller to remove the old spindle. Plan 30–60 minutes.
• Common gotcha: The pulley may be pre-installed or need transfer from your old spindle. If yours is damaged, order a separate pulley. Also, use Loctite on the mounting bolts to prevent loosening from vibration.
• Bearing type: Uses sealed ball bearings—no greasing required. But if the deck is heavily used, consider replacing all three spindles at once to avoid future downtime.

Should You Buy It

If you have a 46-inch Craftsman T-series or compatible MTD/Huskee tractor and need a budget-friendly spindle replacement that’s easy to install, this is a solid pick. It’s not for commercial use or non-standard decks, but for a weekend repair on a residential mower, it’s a good value.