Mr Mower Parts Lawn Mower Blade Compatible with Husqvarna Sears Craftsman 406712 189028 175064 165833 532175064 for 21" Cut Mowers

What It Is

This is a replacement mulching blade for 21-inch walk-behind mowers, designed to fit Husqvarna and Craftsman models (and other brands using OEM part numbers 406712, 189028, 175064, 165833, 532175064). It’s for cutting and recirculating grass clippings, not for bagging or side-discharge.

Fitment & Compatibility

Before buying, confirm your mower deck is exactly 21 inches (measure from blade tip to tip, not the deck housing). Check your current blade’s OEM part number against the list: 406712, 189028, 175064, 165833, or 532175064. This blade is aftermarket, not OEM, so it may fit other brands (e.g., Sears, Poulan) that use those numbers, but verify your model’s blade hole pattern—it should be a standard 5-point star center hole. Measure your blade length (21 inches) and thickness (typically 0.125 inches). Do not assume it fits all 21-inch mowers; some Craftsman or Husqvarna models use a different hole pattern or offset.

Key Things to Buy

• Quality: Made from heat-treated steel, but may not be as durable as OEM blades. Expect similar sharpness out of the box, but edge life may be shorter in sandy or rocky soil.
• Installation difficulty: Easy—requires a socket wrench and blade removal tool (or a block of wood to hold the blade). Torque the center bolt to 30-40 ft-lbs. Wear gloves; blades are sharp.
• Common gotchas: Aftermarket blades can be slightly lighter, causing vibration if not balanced. Check balance with a blade balancer before installing. Also, this is a mulching blade only—if your mower has a side-discharge chute, it won’t work optimally for bagging.
• Price vs. value: At $21.99, it’s cheaper than OEM (often $30+). Good for budget replacement, but not for heavy commercial use.

Should You Buy It

Buy this if you need a low-cost replacement for a 21-inch Husqvarna or Craftsman mower and primarily mulch clippings. Skip it if you want OEM-grade durability, need a bagging or high-lift blade, or have a mower with a non-standard hole pattern.