Stens 346-429 Mulching Blade Compatible With/Replacement For Toro Most 21" recyclers: does not fit 20465, 20466, 20475, 20476, 20482, 20483 and 20487 108-0954-03, 108-3762-03, 108-3762-03P Lawn Mowers

What It Is

The Stens 346-429 is an aftermarket mulching blade designed to replace OEM Toro blades (108-0954-03, 108-3762-03, 108-3762-03P) on most 21-inch Toro Recycler lawn mowers. It’s built for cutting grass into fine clippings that decompose quickly, eliminating the need for bagging.

Fitment & Compatibility

• Deck size: Fits 21-inch cutting decks only.
• Model check: Works with most Toro 21" Recyclers, but does not fit models 20465, 20466, 20475, 20476, 20482, 20483, or 20487.
• OEM cross-reference: Replaces Toro 108-0954-03, 108-3762-03, and 108-3762-03P.
• Measurement: Confirm your original blade’s length (21") and center hole diameter (usually 1" or 7/8") before buying. Stens 346-429 matches OEM specs, but measure to be safe.
• Aftermarket vs OEM: Aftermarket part; quality is comparable to OEM but always verify blade thickness and balance.

Key Things to Know

• Installation difficulty: Easy – requires a socket wrench and blade removal tool (or block of wood to prevent spinning). No special skills needed.
• Sharpening: Can be sharpened, but mulching blades wear faster than standard blades. Replace when nicked or dull.
• Balance: Aftermarket blades may need balancing after sharpening. Use a blade balancer to avoid vibration.
• Common gotcha: The “does not fit” list (models 20465 etc.) is critical – these use a different spindle or blade adapter. Double-check your model number on the mower’s underside or manual.

Should You Buy It

Buy this if you own a compatible Toro 21" Recycler and want a reliable, affordable mulching blade that performs on par with OEM. It’s a solid choice for regular lawn care, but skip it if your model is on the exclusion list – you’ll need a different blade.