405380 Mower Blades for Husqvarna AYP 46 inch Zero Turn Mower Z246 YTH22V46 YTH20K46 YTH21K46 YTH22K46 YTA22V46 532405380 594892801 PP21011 Ariens 21546611 5-Star/High Lift / 2PCS

What It Is

The 405380 mower blade set is a 5-star/high-lift replacement blade designed for 46-inch Husqvarna and AYP zero-turn and lawn tractors. These two blades are optimized for superior grass lift and discharge, making them ideal for bagging or side-discharge mowing on medium to large lawns.

Fitment & Compatibility

Before buying, verify your mower has a 46-inch deck and accepts 2 blades with a 3-point star center hole (5-point star pattern). The 405380 replaces OEM part numbers 532405380, 594892801, and PP21011, and fits Husqvarna models Z246, YTH22V46, YTH20K46, YTH21K46, YTH22K46, YTA22V46, as well as Ariens 21546611 and other AYP-branded tractors. Measure your existing blade length (should be ~20 inches) and ensure the center hole diameter matches (5/8 inch). Check your deck’s blade bolt pattern—these use a 5/16-inch bolt hole. If your mower uses a different star pattern or bolt size, these won’t fit.

Key Things to Know

• Lift vs. mulching: High-lift blades create strong airflow for bagging/side discharge but are not ideal for mulching (they leave clippings on top). For mulching, use a low-lift or mulching blade.
• Installation: Straightforward—remove the deck, use a socket wrench to swap blades. Torque bolts to 40-50 ft-lbs. No special tools needed beyond a block of wood to hold the blade.
• Balance: After installation, spin the blade by hand to check for wobble. Unbalanced blades cause vibration and uneven cuts. If needed, balance with a simple balancer or file the heavy side.
• Durability: These are heat-treated steel blades that hold an edge well for a season of regular mowing. Avoid hitting rocks or roots—they can bend or chip.

Should You Buy It

If you own a compatible 46-inch Husqvarna or AYP zero-turn/tractor and primarily bag or side-discharge on a lawn with grass taller than 3 inches, these high-lift blades offer excellent performance at a fair price. Skip them if you mulch regularly or have a different deck size.