Husqvarna 532 14 51-06 OEM 20" Mulch Blade (50Dk6020Md) 532145106

What It Is

The Husqvarna 532 14 51-06 (OEM part number 50Dk6020Md) is a 20-inch mulching blade designed for Husqvarna and compatible lawn tractors. It uses a curved, high-lift design to cut grass into fine clippings that decompose quickly, eliminating the need for bagging.

Fitment & Compatibility

• Deck size: This blade fits 20-inch cutting decks only. Measure your deck’s cutting width before buying—do not guess based on mower model.
• OEM vs aftermarket: This is a genuine Husqvarna part. Aftermarket blades may have different hole patterns or balance, so stick with OEM for guaranteed fit.
• Measurements: Blade length is 20 inches, center hole diameter is 1 inch, and the drive hole pattern is a 5-point star (common on Husqvarna and some Craftsman/John Deere models). Verify your blade’s current hole pattern matches.
• Model check: Common on Husqvarna YTH, LTH, and GTH series tractors with 20-inch decks. Also fits some Poulan Pro, Weed Eater, and McCulloch models. Search your mower’s model number in the OEM parts diagram to confirm.

Key Things to Know

• Quality: OEM blades are heat-treated and balanced from the factory. They hold an edge longer than cheap aftermarket options and reduce vibration.
• Installation difficulty: Easy—requires a socket wrench and a block of wood to jam the blade. Torque the center bolt to 35–50 ft-lbs. Always wear gloves.
• Common gotcha: Mulching blades are not for bagging or side-discharge. If you switch between modes, you’ll need a separate blade set. Also, mulching works best with dry, short grass—wet or tall grass clogs the deck.
• Durability: Expect 25–50 hours of cutting before sharpening, depending on lawn conditions. Replace when the edge is rounded or nicked.

Should You Buy It

Buy this if you own a Husqvarna or compatible tractor with a 20-inch deck and want to leave clippings on the lawn for natural fertilization. It’s a direct OEM replacement that ensures proper balance, fit, and performance—worth the extra cost over generic blades. Skip it if you bag or side-discharge regularly.