UDC Parts 131-4547-03 Lawn Mower Blades Replacement for Toro Recycler 22 Inch 21465 20378 20339 21445 108-9764-03 104-8697-03 20334 20353 21442 108-9764-03P 131-4546-03 21378 / Gator Mulching 2 Pack

What It Is

This is a 2-pack of aftermarket mulching blades designed for Toro Recycler 22-inch walk-behind mowers. They replace OEM part numbers 108-9764-03 and 104-8697-03, and are built for high-lift mulching performance.

Fitment & Compatibility

Before buying, confirm your mower has a 22-inch cutting deck and is a Toro Recycler model. Compatible models include 21465, 20378, 20339, 21445, 20334, 20353, 21442, and 21378. Also fits any mower using OEM blades 108-9764-03, 108-9764-03P, 104-8697-03, or 131-4546-03. Measure your blade length: these are 22-inch blades with a 5-point star center hole and 0.25-inch thickness. Not for 21-inch or 24-inch decks. Verify your blade bolt size (typically 5/8-inch or 7/16-inch) and check that your mower uses two blades (not a single blade or side-discharge design).

Key Things to Know

• Quality: These are Gator-style mulching blades with serrated edges, offering better grass shredding than standard Toro blades. Made from heat-treated steel; expect 2-3 seasons of normal use.
• Installation: Moderate difficulty. You’ll need a socket wrench and a blade removal tool or block of wood to prevent spinning. Torque blade bolts to 45-55 ft-lbs (check your mower manual). Always disconnect the spark plug before starting.
• Common gotchas: The blades are sharp out of the box—handle with gloves. Some users report the center hole is slightly tight on the spindle; a light tap with a rubber mallet can help. Do not use on mowers with a single-blade setup or different deck sizes.
• Balance: Always check blade balance after mounting; an unbalanced blade causes vibration and poor cut quality. Use a blade balancer or a nail in the wall.

Should You Buy It

If you own a Toro Recycler 22-inch mower and want a durable, high-performance aftermarket blade that mulches better than OEM, this is a solid buy. It’s a direct fit for listed models, well-reviewed for longevity and cut quality, and priced competitively. Avoid if you need side-discharge or bagging performance—these are optimized for mulching.