AB2100 Lawn Mower Blades, Compatible with E GO Power+ 21" Mowers LM2100, LM2100SP, LM2140SP, Replaces 3705938001, 1 Pack

What It Is

This is a single replacement blade for 21-inch EGO Power+ mowers, designed to cut grass efficiently on residential lawns. It fits the LM2100, LM2100SP, and LM2140SP models, serving as a direct replacement for the OEM part 3705938001.

Fitment & Compatibility

Verify these before buying:

• Deck size: Only fits 21-inch EGO mowers. Measure your deck width to confirm.
• Model check: Works with LM2100, LM2100SP, LM2140SP. Not compatible with older EGO models (e.g., LM2000, LM2010) or other brands.
• OEM replacement: This AB2100 blade replaces EGO part number 3705938001. Compare your old blade’s part number to be sure.
• Measurements: Blade length is 21 inches, center hole diameter 1 inch, with a 5-point star pattern. Confirm these match your mower’s spindle.
• Single pack: You need two blades for a full set (one per spindle). This listing is for one blade only.

Key Things to Know

• Quality: Aftermarket blade; may not have the same balance or edge retention as OEM. Sharpness out of box varies—check before installing.
• Installation: Simple—remove old blade, clean spindle, install new blade with the correct orientation (cutting edge facing forward). Use a torque wrench: tighten to 35–45 ft-lbs.
• Common gotcha: This blade is thinner than OEM (0.15 vs 0.1875 inches). It can bend or dull faster on rocky or thick grass. Inspect regularly.
• Balance: Aftermarket blades often need balancing. Use a blade balancer to avoid vibration and spindle wear.

Should You Buy It

Buy this if you need a cheap, functional replacement for a single EGO 21-inch blade and don’t mind slightly lower durability than OEM. It’s fine for light-duty mowing on clean lawns, but skip it if you mow tough terrain or want maximum longevity—stick with the genuine EGO 3705938001.