Earthtec 133-8182-03 89914P 331387XB Mulching Blades Replacement Fits for Toro Super Recycler ，Exmark, LawnBoy 21 Inch Mower 109-0854 108-0954-03 116-4500 1164500S 1350413S (1 Pcs)

What It Is

This is a replacement mulching blade designed to upgrade or restore the fine-cut performance on Toro Super Recycler, Exmark, and LawnBoy 21-inch mowers. It uses a high-lift wing design to recirculate clippings for finer mulching and better bagging.

Fitment & Compatibility

Before buying, verify your mower has a 21-inch deck with a 2-3/8 inch center hole and a 3.75-inch blade length from center hole to tip. This blade replaces OEM part numbers 109-0854, 108-0954-03, 116-4500, 1164500S, and 1350413S. It fits most Toro Super Recycler models (e.g., 20333, 20339, 20340) and Exmark/LawnBoy equivalents from the late 2000s to current production. Check your mower’s model number against Earthtec’s compatibility list—some older 21-inch Toros with a different spindle pattern won’t work.

Key Things to Know

• Installation: Easy bolt-on replacement. Use a torque wrench to tighten the blade bolt to 40-50 ft-lbs; overtightening can strip the spindle.
• Quality: Made from heat-treated carbon steel, similar to OEM hardness. Edge holds up well in mixed grass and light debris, but avoid rocks or heavy sticks.
• Balance: Each blade comes individually balanced, but always check with a blade balancer after installation—imbalance causes vibration and bearing wear.
• Common Gotcha: This is a single blade, not a set. If your mower uses two blades (some 21-inch models do), you’ll need to buy two.

Should You Buy It

If you own a compatible Toro Super Recycler, Exmark, or LawnBoy 21-inch mower and want a solid mulching blade that’s cheaper than OEM without sacrificing cut quality, this is a good pick. It’s best for homeowners who mow weekly and value fine clippings over bagging volume.