Oregon Blade, 100 Series 17 Inch Replaces John Deere GY20852

What It Is

This is an Oregon 100 Series 17-inch replacement blade designed for electric EGO lawn mowers, specifically replacing the OEM John Deere GY20852 part. It’s a standard lift blade for residential mulching and bagging on walk-behind mowers.

Fitment & Compatibility

• Deck size: Must be exactly 17 inches. Measure your existing blade from tip to tip (not the deck housing). If your mower uses a 17" blade, this fits.
• Model/brand fit: Verified for EGO models that accept OEM GY20852 (e.g., certain LM2100 series). Not for all EGO mowers—check your manual or current blade part number.
• OEM vs aftermarket: Oregon is a trusted aftermarket brand; this is a direct replacement for John Deere GY20852, not a universal fit. Ensure your mower uses a 5-point star center hole and 1-inch diameter arbor hole (common on EGO).
• Measurement check: Blade length 17", width ~2.25", thickness 0.150". Confirm your old blade matches these dimensions.

Key Things to Know

• Quality: Oregon 100 Series blades are heat-treated steel with a balanced design. Good for residential use, but not as durable as premium 500 Series for heavy wear.
• Installation difficulty: Easy—requires a 15/16" or 5/8" socket (depending on nut). Torque to 35-40 ft-lbs. Use a blade removal tool or block wood to prevent spinning.
• Common gotchas: The 5-point star center hole is specific to EGO/John Deere—won’t fit other brands like Toro or Honda with different arbor shapes. Always check the hole pattern before buying.
• Performance: Designed for mulching and bagging, but not ideal for rough terrain or thick wet grass—may dull faster than OEM.

Should You Buy It

Buy this if you own an EGO mower that uses John Deere GY20852 (check your manual) and want a budget-friendly, reliable replacement for regular residential mowing. Avoid if you need heavy-duty performance for commercial use or have a different brand/arbor hole pattern. At $13.37, it’s a solid value for the right fit.