42'' Deck Mulching Blades (27843 21546095 138498 1138971 532138971 532138971 134149) Fits Crafts man Pou LAN Pro Hus qvrna Lawn Mower (2 PCS)

What It Is

These are a set of two 42-inch mulching blades designed to replace OEM blades on select Craftsman, Poulan Pro, Husqvarna, and similar lawn tractors. They’re intended for mulching—chopping clippings into fine particles that decompose into the turf—rather than bagging or side-discharge.

Fitment & Compatibility

Before buying, confirm three things:

• Deck size: Must be exactly 42 inches (measured cutting width, not deck housing).
• OEM cross-reference: Fits part numbers 27843, 21546095, 138498, 1138971, 532138971, and 134149.
• Brand/model: Common on Craftsman (917, 247 series), Poulan Pro (PP42), Husqvarna (YTH42, GTH42), and some AYP/Electrolux-built tractors. Check your mower’s manual or existing blade for the stamped OEM number.
• Measurements: Blade length ~21 inches, center hole ~7/8-inch diameter, offset/center hole pattern matches most AYP-style spindles. If your blade has a different hole shape or offset, it won’t fit.

Key Things to Know

• Quality: Aftermarket steel, not OEM. Expect decent durability for residential use but may dull faster on heavy or wet grass.
• Installation: Requires a torque wrench (40–60 ft-lbs) and a blade removal tool. Use thread locker on the spindle bolts.
• Gotcha: These are mulching only—they lack the lift wings for bagging. If you switch between modes, you’ll need separate blades.
• Balance: Aftermarket blades sometimes need balancing out of the box. Check with a blade balancer before mounting.

Should You Buy It

If you have a 42-inch Craftsman, Poulan Pro, or Husqvarna tractor and primarily mulch, this is a solid budget option. It’s not for heavy commercial use or for those who need bagging performance. For the price, it’s a reliable replacement that saves money over OEM, as long as you confirm fitment and balance it first.