Mulching Blade for Toro Mowers, 22-Inch Professional Lawn Mower Blade, Replaces OEM no. 131-4547-03,108-9764-03, 104-8697-03

What It Is

This is a 22-inch mulching blade designed for Toro professional and residential mowers. It replaces OEM numbers 131-4547-03, 108-9764-03, and 104-8697-03, and is intended for use on 22-inch deck mowers where fine grass clipping recycling and nutrient return to the lawn is the goal.

Fitment & Compatibility

Before buying, verify three things:

• Deck size: Must be exactly 22 inches. Measure your deck’s cutting width (blade tip to blade tip) if unsure.
• Model list: Fits Toro 20065, 20371, 20372, 20373, 20374, 20378, 20379, 20380, 20381, 20382, 20384, 20385, 20386, 20387, 20388, 20390, 20391, 20392 (and many more). Check your mower’s model plate.
• Center hole & drive: 5-point star center hole (Toro’s common pattern). Measure your spindle’s drive shape—this won’t fit round or oval holes.
• OEM vs aftermarket: This is a Toro-branded part, so it matches factory specs exactly. No adapters needed.

Key Things to Know

• Sharpness out of box: Ready to install, but edge may need a quick hone for best mulching performance.
• Installation difficulty: Easy—disconnect spark plug, block blade, remove bolt, swap blade, torque to 50-60 ft-lb. Use a blade balancer after install.
• Common gotcha: Mulching blades work best with a mulching plug or baffle installed. Without it, you’ll get poor cut quality and clumping.
• Wear check: Replace if blade is bent, nicked, or has more than 1/8-inch metal loss from sharpening.

Should You Buy It

Yes, if you own a compatible 22-inch Toro mower and want to mulch leaves or grass into fine clippings that feed your lawn. It’s a direct OEM replacement, priced fairly for a genuine Toro part, and the 4.4-star rating from 34 reviews confirms it performs as expected. Skip it if you need a standard lift blade for bagging or side-discharge only.