OCPTY 134149 Mower Mulching Blade Set Compatible with Husqvarna for AYP 531005085, 531307223, 532422719 Replace 422719, 424752（2 Pack）Mower Blades 42 Inch Deck

What It Is

This is a 2-pack of mulching blades designed for 42-inch cutting decks, compatible with select Husqvarna and AYP (American Yard Products) models. Mulching blades feature a higher lift and curved design to chop grass clippings finely and recirculate them into the lawn for natural fertilization.

Fitment & Compatibility

Before buying, verify three things:

1. Deck size: These blades fit 42-inch (107 cm) cutting decks only. Measure your deck width (blade tip to blade tip) to confirm.
2. OEM cross-reference: Compatible with Husqvarna/AYP part numbers 531005085, 531307223, 532422719, 422719, and 424752. Check your owner’s manual or current blade for one of these numbers.
3. Physical dimensions: Each blade is approximately 21 inches long (center hole to tip), with a 5-point star center hole (common on Husqvarna/AYP spindles). Measure your blade length and center hole shape before ordering. Not compatible with round-hole or oval-hole spindles.

Key Things to Know

• Quality: Aftermarket blades; may be slightly thinner or lighter than OEM. Check for balanced weight before installation—unbalanced blades cause vibration and uneven cuts.
• Installation: Straightforward—remove one bolt per blade (usually 5/8” or 15/16” socket). Torque to 30-40 ft-lbs. No special tools needed.
• Gotcha: Mulching blades require a mulching plug or a deck designed for recirculation. If your mower has a side discharge chute, you must block it or switch to a mulching position (if available). Standard 2-in-1 or 3-in-1 decks work best.
• Sharpening: These are not pre-sharpened out of the box. You may need to file or grind the cutting edges for optimal performance.

Should You Buy It

If you have a 42-inch Husqvarna or AYP mower with a mulching deck and want a budget-friendly replacement for OEM mulching blades, this 2-pack is a solid value at $21.99. However, if you prioritize OEM thickness or longer lifespan, stick with genuine Husqvarna blades. For occasional mulching on a standard residential lawn, these will work fine.