3705369001 20" Lawnmower Blade for EGO LM2022SP, LM2020SP and LM2021 20" Lawn Mowers Y

What It Is

This is a genuine OEM 20-inch replacement blade for EGO cordless lawn mowers, specifically the LM2022SP, LM2020SP, and LM2021 models. It’s designed for mulching and bagging on residential lawns, providing a clean cut for mid-sized yards.

Fitment & Compatibility

Before buying, confirm your mower’s deck size is exactly 20 inches (measure from blade tip to tip). This blade is OEM, not aftermarket, so it’s a direct fit for the listed EGO models only—do not use on other brands or EGO mowers with a different deck size (e.g., 21-inch models). Check your mower’s model number on the underside sticker or manual; the part number 3705369001 is stamped on the original blade. The center hole is a 5-point star pattern, and the blade length is 20 inches with a 0.25-inch thickness. If your mower has a different mounting system, it won’t work.

Key Things to Know

• Quality: OEM part matches original factory specs—balanced and coated for corrosion resistance. No sharpening needed out of the box.
• Installation: Easy with a socket wrench and torque to 30-40 ft-lbs. Use a blade removal tool (or block the blade with wood) to prevent spinning. The star pattern aligns only one way.
• Common gotchas: Always disconnect the battery before swapping blades. If your mower vibrates after installation, recheck balance or tighten the bolt. Don’t overtighten—stripping the star pattern is a risk.
• Durability: Lasts 1-2 seasons with normal use on grass; dulls faster on sandy soil or debris.

Should You Buy It

Buy this if you own an EGO LM2022SP, LM2020SP, or LM2021 and want a hassle-free, OEM-fit replacement that maintains performance and warranty compliance. It’s ideal for DIY homeowners who value longevity and a precise cut over cheaper aftermarket alternatives. Not for other mower brands or decks over 20 inches.