918-06977A 618-06977 Spindle Assembly Fit for MTD/Cub Cadet/Troy-Bilt 46 Inch Deck XT1-LT46 XT2-LX46 LT46 LX46 RZT L46 TB2246 Lawn Mower, Fit for Craftsman T8200 T8600 Lawn Tractor (2 Pack)

What It Is

This is a replacement spindle assembly (2-pack) for the 46-inch cutting decks on select MTD, Cub Cadet, Troy-Bilt, and Craftsman lawn tractors. It drives the mower blade and supports the blade pulley; you’d buy this when a spindle seizes, wobbles, or leaks grease.

Fitment & Compatibility

Before buying, confirm your deck is a genuine 46-inch stamped steel deck (not fabricated). This spindle fits Cub Cadet XT1-LT46, XT2-LX46, LX46, RZT L46; Troy-Bilt TB2246; and Craftsman T8200/T8600 series. It replaces OEM part numbers 918-06977A and 618-06977A. Measure your spindle housing height (approx. 4.5 inches) and bolt pattern (3 holes on 3-inch centers). If your deck uses a different spindle height or a 5-hole pattern, this won’t work. Also verify your blade retention method—this spindle uses a 5/8-inch hex shaft and a single nut (no center bolt).

Key Things to Know

• Build quality: These are aftermarket spindles with sealed ball bearings. They’re a solid value compared to OEM, but the seals may not last as long in heavy commercial use.
• Installation difficulty: Moderate. You’ll need a socket set, a wrench for the pulley nut, and a puller if the old spindle is seized. Plan 30–60 minutes per spindle.
• Common gotchas: The pulley nut is reverse-threaded on many MTD decks—turn clockwise to loosen. Also, the included grease fitting may be small; use a needle adapter if your grease gun doesn’t fit.
• Deck removal: You can replace spindles without pulling the deck, but it’s easier to remove the deck for access and to avoid stripping belt routing.

Should You Buy It

If you need to replace one or two spindles on a 46-inch MTD-family deck and want to save roughly 30–40% over OEM, this 2-pack is a smart buy. It’s not for high-hour commercial mowing (the bearings may wear sooner), but for residential use on Cub Cadet, Troy-Bilt, or Craftsman tractors, it’s a reliable, cost-effective fix.