918-06991 618-06991 Spindle Assembly for MTD Troy Bilt Bronco Pony 42 TB42 MTD CraftsMan 42" Deck T1000 T1200 T1400 T1300 T1800 LT4200 CLT42G CLT42H T130(2 Pack)

What It Is

The 918-06969/618-06969 spindle assembly is the rotating hub that drives your mower blade. This 2-pack is designed for 42-inch MTD-built decks on Troy-Bilt Bronco/Pony, Craftsman T-series, and similar lawn tractors. Each spindle includes the housing, bearings, shaft, and pulley—ready to bolt on.

Fitment & Compatibility

Before buying, confirm your deck is 42 inches (measured blade tip to blade tip) and that your mower is from the MTD family (Troy-Bilt, Craftsman, Yard Machines, Huskee). This spindle replaces OEM numbers 918-06969 and 618-06969. It fits Craftsman T1000, T1200, T1300, T1400, T1800, LT4200, CLT42G, CLT42H, and Troy-Bilt Bronco/Pony 42. Measure your old spindle: the shaft diameter is 5/8-inch, and the housing mounting hole spacing is 3 inches center-to-center. If your deck uses a different spindle (e.g., 7/8-inch shaft or 2.5-inch bolt pattern), this will not fit.

Key Things to Know

• Quality: Aftermarket spindles at this price point typically use standard-grade bearings. They work fine for residential use but may wear faster than OEM under heavy or commercial use.
• Installation: Moderate difficulty. You’ll need a socket set, a wrench for the pulley nut, and possibly a puller if the old spindle is seized. The 2-pack lets you replace both spindles at once, saving future labor.
• Common gotcha: The pulley nut is reverse-threaded on some models—turn clockwise to loosen. Check your deck’s pulley orientation before reassembling.
• Deck alignment: After installation, ensure the blade tips are parallel and the deck is level. A misaligned spindle can cause uneven cutting and vibration.

Should You Buy It

If you own a 42-inch MTD tractor and need a budget-friendly, ready-to-install replacement for one or both spindles, this 2-pack is a solid choice for residential mowing. For commercial use or if you want OEM-grade durability, consider spending more on genuine MTD parts.