Cluparis 532406712 Mulching Blade for 21 in. Cut - Mower Blades for AYP Husqvarna Poulan 165833 175064 176135 189028 406706 594893001 331737B 917175064

What It Is

The Cluparis 532406712 is a replacement mulching blade designed for 21-inch walk-behind mowers, primarily compatible with AYP, Husqvarna, and Poulan models. It replaces OEM part numbers 532406712, 165833, 175064, 176135, 189028, 406706, 594893001, 331737B, and 917175064, and is intended for mulching grass clippings into fine particles to return nutrients to the lawn.

Fitment & Compatibility

Before buying, confirm your mower has a 21-inch cutting deck and a center hole diameter of 7/8 inch (22 mm). This blade has a 3.25-inch center hole (for the star-shaped adapter) and a 0.165-inch thickness. It fits most AYP, Husqvarna, and Poulan models with the listed OEM numbers, but double-check your mower’s model number against the cross-reference list. Note that this is an aftermarket blade, not OEM Husqvarna, so ensure the mounting pattern matches your spindle—some older decks may use a different hole shape. Measure your old blade’s length (21 inches tip-to-tip) and center hole dimensions to avoid return issues.

Key Things to Know

• Quality: Made from heat-treated steel, but some users report it’s slightly thinner than OEM blades, which may reduce durability in rocky or heavy-use conditions.
• Installation: Easy swap with a socket wrench; use a blade removal tool to lock the spindle. Torque the bolt to 30-40 ft-lbs. Always disconnect the spark plug first.
• Gotcha: The blade may require balancing after installation—use a blade balancer to prevent vibration, which can damage the spindle or cause uneven cuts.
• Mulching performance: Works best with dry grass; wet or tall grass may clog the deck, so take multiple passes.

Should You Buy It

If you own a 21-inch Husqvarna or Poulan mower and need an affordable mulching blade for regular lawn maintenance, this Cluparis blade is a solid value at $21.99. It’s not built for heavy-duty commercial use or rocky terrain, but for typical residential mulching, it delivers fine clippings and easy installation. Verify your deck size and center hole specs before ordering.