131-4547-03 Mulching Blade Compatible with Toro 22 Inch Recycler Mowers, 108-9764 Lawn Mower Blade Replaces for 108-9764-03, 131-4546-03, 104-8697-03, 108-9764-02P

What It Is

This is a mulching blade designed specifically for Toro 22-inch Recycler walk-behind mowers. It replaces OEM part numbers 108-9764, 131-4546-03, and 104-8697-03, and is intended to cut grass into fine clippings that decompose quickly and return nutrients to the lawn.

Fitment & Compatibility

Before buying, confirm these three things:

1. Deck size: Fits only 22-inch cutting decks. Measure your deck width (blade tip to blade tip) or check your mower model number.
2. Mower models: Works with Toro Recycler models that originally used part 108-9764 or 131-4546-03. Common compatible models include 20332, 20333, 20334, 20370, 20371, 20378, and 20379. Check your owner’s manual or current blade part number.
3. Measurements: Blade length is 22 inches, center hole diameter is 7/8 inch, and the blade has a 0.25-inch thickness. This is a direct OEM-replacement blade, not a universal fit—it won’t work on other brands or non-Recycler Toro decks.

Key Things to Know

• Quality: Made by Toro, so fit and balance are identical to the original. No aftermarket wobble or alignment issues.
• Installation difficulty: Easy. Requires a socket wrench (usually 9/16 inch) and a block of wood to prevent blade spin. Torque to 45-55 ft-lbs. No special tools needed.
• Common gotcha: This is a mulching blade, not a bagging or side-discharge blade. If you need to bag clippings, use the standard blade instead. Also, mulching works best when you mow frequently and keep grass dry.
• Wear tip: Replace blades every 25 hours or once per season, or sooner if you hit rocks or roots. Dull blades tear grass, leading to brown tips.

Should You Buy It

Yes, if you own a Toro 22-inch Recycler mower and want OEM-quality mulching performance. It’s the exact replacement for the factory blade, so you won’t have fitment surprises. Skip it if you primarily bag or discharge, or if your mower has a different deck size.