Husqvarna 532403107 Lawn Tractor Mulching Blade Genuine Original Equipment Manufacturer (OEM) Part, 2-Pack

What It Is

This is a genuine OEM 2-pack of mulching blades for Husqvarna lawn tractors, designed to finely chop grass clippings and return them to the lawn as natural fertilizer. It replaces part number 532403107 and fits select 42-inch and 46-inch cutting decks.

Fitment & Compatibility

Before buying, confirm three things:

• Deck size: This blade fits Husqvarna 42-inch and 46-inch stamped steel decks (common on GTH, YTH, and LTH series). Not for 48-inch or 54-inch decks.
• Model number: Check your tractor’s model tag (under seat or on frame). Compatible with models like YTH2246T, GTH2454, LTH2038, and many others—verify via Husqvarna’s online lookup tool.
• Measurements: Blade length is 20.5 inches, center hole is 1 inch, and blade thickness is 0.187 inch. Measure your old blade to confirm.
• OEM vs aftermarket: This is genuine Husqvarna, not a universal blade. OEM ensures exact fit and balanced cut; aftermarket blades may require filing or shimming.

Key Things to Know

• Quality: OEM blades are heat-treated and sharp from the factory. They last longer and cut cleaner than most aftermarket options.
• Installation difficulty: Easy—requires a socket wrench and torque wrench. Torque bolts to 70-90 ft-lbs. Use thread locker if bolts are worn.
• Common gotchas: These are mulching blades (curved, with serrated edges), not standard lift blades. They won’t discharge or bag well. Also, always replace in pairs to avoid vibration.
• Deck compatibility: Will not fit zero-turn mowers or older Husqvarna decks with a different spindle pattern.

Should You Buy It

Yes, if you own a compatible Husqvarna lawn tractor with a 42-inch or 46-inch deck and want the best mulching performance. The price is fair for OEM quality, and the 2-pack saves you a second trip. Avoid if you need standard lift or bagging blades, or if your deck is a different size.