139775 138971 134149 Mulching Blades for AYP Poulan Craftsman Husqvarna 42 Inch Lawn Tractor Mower Blade Parts PP24001 PP24003 24652 127843 422719 532139775 532138971 594893101 5 Point Star (Black)

What It Is

This is a set of three mulching blades (part numbers 139775, 138971, 134149) designed for 42-inch cutting decks on AYP, Poulan, Craftsman, and Husqvarna lawn tractors. Mulching blades feature a curved, high-lift design that recirculates grass clippings for fine cutting, eliminating the need for bagging.

Fitment & Compatibility

Check before buying:

• Deck size: Only fits 42-inch decks (not 46” or 54”).
• Blade shape: 5-point star center hole (not a round or oval hole). Measure your current blade’s center hole to confirm.
• OEM cross-references: Replaces OEM parts 532139775, 532138971, 532134149, 422719, 127843, 24652, and aftermarket codes PP24001, PP24003, 594893101.
• Common brands: Works on most AYP, Poulan, Craftsman, Husqvarna, and some Murray/MTD models from the 2000s onward. Verify your mower’s model number against the OEM part list.
• Length: Each blade is approximately 20.5 inches long. Measure your old blade end-to-end to confirm.

Key Things to Know

• Mulching vs. regular blades: These have a more curved shape than standard blades. They won’t bag well—use only for mulching or side-discharge with a mulch plug.
• Installation: Requires a torque wrench (45-55 ft-lbs). Hand-tightening can loosen blades mid-operation. Use a blade removal tool or block the blade with wood to prevent spinning.
• Balance: Aftermarket blades may need balancing before install. A $10 blade balancer is worth it—unbalanced blades cause vibration and deck damage.
• Sharpening: These are not hard-faced; you can sharpen them 2-3 times before replacement. Replace if bent or nicked.

Should You Buy It

Buy this set if you have a 42-inch AYP/Poulan/Craftsman/Husqvarna tractor, want to mulch leaves or grass without bagging, and need a direct replacement for OEM parts at a lower price. Skip it if you need bagging blades, have a different deck size, or want a premium hard-faced blade for heavy-duty mowing.