GICOOL 406712 Mulching Blade with 5/8'' Circle Mounting Pattern for 21'' Deck Push Lawn Mower Craftsman Husqvarna 532406712 165833 175064 189028 532189028

What It Is

The GICOOL 406712 is an aftermarket mulching blade designed for 21-inch deck push mowers, primarily replacing OEM part numbers 532406712, 165833, 175064, 189028, and 532189028. It’s built for fine grass clipping recutting and lawn feeding, ideal for mulching applications on Craftsman and Husqvarna models.

Fitment & Compatibility

• Deck size: Fits 21-inch cutting decks only. Measure your deck width from side to side—if it’s not 21 inches, this blade won’t fit.
• Mounting pattern: 5/8-inch center hole with a circle mounting pattern (no oval or star). Verify your spindle’s bolt pattern matches a round 5/8-inch hole.
• OEM cross-reference: Directly replaces Craftsman/Husqvarna OEM parts 406712, 165833, 175064, 189028, and 532189028. Check your mower’s manual or existing blade for these numbers.
• Brand fit: Designed for Craftsman and Husqvarna push mowers with compatible spindles. Not guaranteed for other brands—measure before buying.
• Length & thickness: Blade length is approximately 21 inches (tip to tip) with a standard 0.25-inch thickness. Confirm your mower’s blade length requirement.

Key Things to Know

• Quality: Made from heat-treated steel for durability, but it’s an aftermarket part—expect slightly less precision than OEM blades. Sharp out of the box, but sharpening may be needed sooner.
• Installation difficulty: Easy for DIYers. Use a blade removal tool or block the blade, then torque to 30-40 ft-lbs. Ensure the blade is oriented with the cutting edge facing the direction of rotation (usually upward on mulching blades).
• Common gotchas: The center hole is exactly 5/8 inch—won’t fit spindles with a 7/8-inch or larger hole. Also, mulching blades require a mulching plug or kit for best results; without it, grass may clump.
• Balance: Check blade balance after installation using a balancer tool. Unbalanced blades cause vibration and uneven cuts.

Should You Buy It

Buy this if you have a 21-inch Craftsman or Husqvarna push mower needing a replacement mulching blade and want a budget-friendly option that closely matches OEM specs. Skip it if you need a high-lift blade for bagging or have a different deck size or mounting pattern. For $22, it’s a solid value for light to medium mulching use.