25022 Lawn Mower Blade Compatible with Greenwork 20" 21" Corded Mowers - 25112, 25222, 33313250, 29172, 29423

What It Is

This is an aftermarket replacement blade for Greenworks 20-inch and 21-inch corded electric lawn mowers. It’s designed to cut grass on standard residential lawns, not for mulching or bagging-specific applications.

Fitment & Compatibility

Before buying, verify three things:

1. Deck size: Fits 20” and 21” Greenworks corded mowers only. Measure your deck width (blade tip to tip) to confirm.
2. Model numbers: Compatible with Greenworks models 25112, 25222, 33313250, 29172, and 29423. Check your mower’s model number (usually under the rear flap or on a sticker near the handle).
3. OEM vs aftermarket: This is a universal-style blade, not OEM Greenworks. It may have slightly different hole patterns or thickness. Compare your old blade’s center hole diameter (typically 1” or 7/8”) and blade length (20” or 21”) before installing.

What to check: Remove your current blade and measure its length, center hole size, and thickness. This blade is often a direct fit but minor filing of the center hole may be needed on some models.

Key Things to Know

• Quality: Made from hardened steel, but not as thick as OEM blades. May dull faster on thick or wet grass.
• Installation difficulty: Easy (10-15 minutes). You need a socket wrench and a block of wood to lock the blade. Torque the bolt to 35-45 ft-lbs.
• Common gotcha: The blade may be slightly lighter than OEM, causing more vibration at high RPM. Balance it on a blade balancer before installing.
• No mulching plug: This is a standard lift blade, not a mulching blade. If your mower uses a dedicated mulching blade, this won’t produce fine clippings.

Should You Buy It

Buy this if you need a budget-friendly replacement for a Greenworks corded mower and don’t mind a slightly shorter lifespan than OEM. It’s a good value for light-duty cutting on small lawns. Skip it if you need a mulching blade or if your mower has a non-standard center hole (e.g., some 21” models use a 5/8” hole).