Husqvarna 586859604 Lawn Mower 21-in Deck Blade Genuine Original Equipment Manufacturer (OEM) Part

What It Is

The Husqvarna 586859604 is a genuine OEM 21-inch replacement blade for walk-behind mowers, designed to cut grass efficiently on residential lawns and medium-duty turf.

Fitment & Compatibility

• Deck size: Fits 21-inch cutting decks only. Measure your deck width to confirm.
• Model compatibility: Works with select Husqvarna, Poulan Pro, and Craftsman walk-behind mowers (e.g., Husqvarna LC221A, LC221RA, LC221RH; Poulan Pro PP21P; Craftsman 944.xxxxx models). Check your mower’s model number in the owner’s manual or under the seat.
• OEM vs aftermarket: This is a genuine Husqvarna part. Aftermarket blades may fit but often differ in thickness, hole pattern, or steel grade. OEM ensures exact fit and balance.
• Measurements: Blade length is 21 inches, center hole diameter is typically 1 inch (verify your spindle hole size). Blade thickness is about 0.2 inches.

Key Things to Know

• Quality: High-carbon steel with a coated finish resists rust and stays sharp longer than budget blades.
• Installation: Easy—requires a socket wrench and torque to 35-40 ft-lbs. Use a blade removal tool to prevent spinning. Always disconnect the spark plug first.
• Common gotchas: This is a standard “mulching” blade (not a high-lift bagging blade). If you need superior bagging, consider a dedicated bagging blade. Also, check for bent spindle or deck damage if your old blade was worn unevenly.
• Balance: OEM blades are pre-balanced, but it’s wise to check balance after sharpening.

Should You Buy It

Buy this if you have a compatible Husqvarna, Poulan Pro, or Craftsman 21-inch walk-behind mower and want a direct-replacement OEM blade that offers reliable cut quality, durability, and hassle-free fit. It’s ideal for residential mowing with mulching or side discharge. For heavy-duty commercial use or specialized bagging needs, consider a different blade type.