Oregon 54 Inch Lawn Mower Blade, Mulching Blade for 54" Deck, 18-7/16" Length, Direct Replacement for Husqvarna, Craftsman, Poulan Part Numbers and More (3 Pack)

What It Is

This is a set of three mulching blades from Oregon, designed for 54-inch lawn mower decks. They are intended for cutting grass into fine clippings to return nutrients to the lawn, and are a direct aftermarket replacement for many Husqvarna, Craftsman, and Poulan models.

Fitment & Compatibility

Before buying, verify three things: deck size (must be exactly 54 inches), blade length (18-7/16 inches from tip to tip), and center hole (must match your spindle – typically 7/8-inch or 1-inch, but measure yours). This set replaces OEM part numbers including Husqvarna 532 40 77-05, Craftsman 137-040, and Poulan 530-05-54-02. Check your mower’s manual or existing blade for the exact OEM number. Note: This is a 3-pack, so confirm your deck uses three blades (most 54-inch zero-turns and tractors do, but not all).

Key Things to Know

• Mulching vs. standard: These blades have a curved, closed design to recirculate clippings. They won’t bag or side-discharge as well as standard blades.
• Installation: Easy if you have a socket wrench and a block of wood to lock the blade. Torque to 70-90 ft-lbs. Always sharpen new blades before first use – factory edges are often dull.
• Common gotchas: The center hole is a standard 7/8" or 1" – measure yours. Also, some Husqvarna decks use a different blade offset; check that the blade’s lift height matches your deck’s design.
• Quality: Oregon is a reputable aftermarket brand. These are heat-treated steel, but expect to sharpen them every 10-15 hours of use for best mulching performance.

Should You Buy It

Buy this if you have a 54-inch deck mower (especially a Husqvarna, Craftsman, or Poulan zero-turn or tractor) and want to mulch grass efficiently without bagging. It’s a solid value for a 3-pack, but skip it if you need standard lift blades for bagging or side-discharge.