Mower Spindle Shaft Replaces For AYP 137645,133172,137646, 532137646, 532133172, 532137645, Compatible with Craftsman 130794 Deck Spindle, for Husqvarna LT100, LT125, LT120, LR120,LT151, LTH151

What It Is

This is a replacement spindle shaft for the cutting deck on select Craftsman, Husqvarna, and AYP lawn tractors. It transfers power from the belt to the blade, and is typically needed when the original shaft bends, seizes, or its bearings fail.

Fitment & Compatibility

Before buying, verify your mower’s model number and deck size. This shaft replaces AYP OEM part numbers 137645, 133172, 137646, 532137646, 532133172, and 532137645. It’s compatible with Craftsman 130794 deck spindles and fits Husqvarna LT100, LT125, LT120, LR120, LT151, and LTH151 tractors. Check your deck’s spindle mounting bolt pattern and shaft diameter – this shaft is typically 5/8” diameter with a specific pulley and blade mount configuration. Measure your old shaft’s length (usually around 4-5 inches) and compare to this replacement. Also confirm your deck size (e.g., 42”, 46”) as spindle height can vary between decks.

Key Things to Know

• Quality: This is an aftermarket part, not OEM. Some users report it’s slightly lighter or has less precise tolerances than genuine AYP/Craftsman spindles. Check for burrs on the shaft before installation.
• Installation: Moderate difficulty – you’ll need a socket set, possibly a puller for the pulley, and a torque wrench for the blade bolt (typically 40-60 ft-lbs). Expect 30-60 minutes per spindle.
• Common Gotchas: The shaft may not include bearings or a housing – you might need to reuse or replace those separately. Also, the blade bolt hole threading can be inconsistent; test-fit your blade bolt before final assembly.
• Warranty: Only 6 reviews at 4.3 stars – limited feedback. Buy from a seller with a return policy in case of fit issues.

Should You Buy It

If you need a budget-friendly replacement for a worn or bent spindle on a common Craftsman or Husqvarna deck, this will likely work. But if you want guaranteed durability and perfect fit, spend more on an OEM AYP part – especially for heavy-duty or commercial use.