MaxPower 561713XB 2 Commercial Mulching Blade Set for Many 42 in. Cut Craftsman, Husqvarna, Poulan Mowers Replaces OEM #'s 138498, 138971, 532138971, 532127843, 532138498

What It Is

This is a set of two aftermarket mulching blades designed for 42-inch cut riding mowers from Craftsman, Husqvarna, and Poulan. They replace OEM part numbers 138498, 138971, 532138971, 532127843, and 532138498, and are meant for mulching grass clippings into fine particles that decompose quickly.

Fitment & Compatibility

Before buying, verify your mower deck measures exactly 42 inches from blade tip to blade tip. These blades fit many Craftsman (including DYT4000, GT5000, LT1000 series), Husqvarna (YTH, GTH, LTH series), and Poulan (Pro, PP, PB series) riding mowers with a 42-inch stamped or fabricated deck. The center hole is 1 inch, and the blade length is 21 inches with a 0.25-inch thickness. Check your current blade’s OEM number against the list above—if it matches, these will work. They will not fit 42-inch decks from John Deere, Toro, or MTD unless cross-referenced. Always measure your existing blade length and center hole before ordering.

Key Things to Know

• Quality vs OEM: Aftermarket blades are often thicker and more durable than OEM, but may require balancing before installation. This set is heat-treated and hardened for longer life.
• Installation: Use a torque wrench to tighten blade bolts to 70-90 ft-lbs. Never reuse old bolts—replace them if worn. Lift the mower deck safely and block it before swapping blades.
• Mulching vs Bagging: These blades have a curved, high-lift design for mulching. They will not work well for bagging or side-discharge; for those, use a dedicated lift blade.
• Sharpness: Blades come sharp but may need a quick touch-up with a file after the first few cuts to remove burrs from shipping.

Should You Buy It

If you own a 42-inch Craftsman, Husqvarna, or Poulan riding mower and want a reliable, affordable mulching blade set that outperforms many OEM options, this is a solid choice. It’s especially good for users who mulch frequently and want to reduce clumping. Not ideal for bagging or side-discharge setups.