UDC Parts 403107 405380 Mower Blades Replacement for 46 Inch Husqvarna YTH22V46 Blades Z246 RZ4623 YTA22V46 532403107 CMXGZAM110146 Craftsman AYP Poulan Pro Ariens 917532403107/2 Pack Gator

What It Is

This is a set of two aftermarket Gator-style mulching blades designed for 46-inch cutting decks on popular lawn tractors. They replace OEM parts 532403107, 405380, and 917532403107, and are intended for residential mowing where grass clippings need to be finely chopped for mulching or bagging.

Fitment & Compatibility

Before buying, confirm these three things:

• Deck size: Your mower must have a 46-inch cutting deck. Measure deck width if unsure.
• Model compatibility: Fits Husqvarna YTH22V46, Z246, RZ4623, YTA22V46, Craftsman models with 46-inch decks (e.g., CMXGZAM110146), AYP, Poulan Pro, and Ariens tractors using the same spindle pattern. Check your owner’s manual or current blade part number.
• Measurements: Blade length is 20.5 inches center-to-center, with a 1-inch center hole and 7-point star drive. If your original blade has a different hole pattern (e.g., oval or round), these won’t fit.

Key Things to Know

• Quality: These are aftermarket, not OEM. They’re made from heat-treated steel and have a Gator-style serrated edge for mulching, but they may not be as durable as factory blades in heavy use.
• Installation: Easy bolt-on replacement if you have a socket wrench and a block of wood to jam the blade. Torque the bolt to 40–50 ft-lbs. No special tools needed.
• Common gotchas: The Gator design is noisier than standard blades—expect more whine. They also require a higher engine speed (full throttle) for good mulching. Check blade balance after install; some users report slight imbalance out of the box.
• Sharpening: These are meant to be replaced, not resharpened. The serrated edge wears quickly in sandy soil.

Should You Buy It

Buy these if you have a 46-inch Husqvarna, Craftsman, or AYP tractor, want an affordable mulching upgrade, and don’t mind a bit more noise. They’re a solid value for residential mowing but skip them if you need OEM durability for commercial use or prefer a standard lift blade for bagging.