108-9764-03 One Mulching Blade Fits Toro Models 20001 20003 20005 20008 20009 20012 20013 20014 20016 20017 20018 20019

What It Is

This is a single OEM mulching blade (part #108-9764-03) designed for Toro walk-behind mowers. It chops grass clippings finely and recirculates them into the lawn, eliminating the need for bagging.

Fitment & Compatibility

• Fits Toro models: 20001, 20003, 20005, 20008, 20009, 20012, 20013, 20014, 20016, 20017, 20018, 20019 (check your model number on the mower’s underside or frame sticker).
• Deck size: Typically 21-22 inch cutting decks; measure your existing blade length (center hole to tip) to confirm.
• OEM vs aftermarket: This is genuine Toro, so it matches dimensions exactly—no drilling or adapter needed.
• Blade specs: Center hole diameter ~1 inch, thickness ~0.19 inch, length ~21.5 inches. Verify these against your current blade.
• Before buying: Remove your old blade and check the part number printed on it, or cross-reference your mower’s model number with Toro’s official compatibility list.

Key Things to Know

• Quality: OEM Toro steel, pre-sharpened, and balanced out of the box—no filing or balancing required.
• Installation: Simple to replace with a socket wrench; use a block of wood to jam the blade when loosening the bolt. Torque to 40-50 ft-lbs.
• Common gotcha: This is a mulching blade only—it won’t bag or side-discharge effectively. If you need versatility, consider a 3-in-1 blade instead.
• Wear indicator: Replace when blade tip is rounded, nicked, or bent. Dull blades tear grass, causing brown tips.

Should You Buy It

If you own one of the listed Toro models and want a direct OEM replacement for clean mulching, this is a reliable, well-reviewed choice. It’s ideal for regular mowing on medium lawns where you prefer to leave clippings as fertilizer. Skip it if you need a bagging or discharge blade, or if your deck is a non-standard size.