Terre Products, Single Multi-Purpose Lawn Mower Blade, 20" Deck, Compatible with Greenworks 25022, 25222 Replacement for 29172, 33313250

What It Is

This is a single multi-purpose lawn mower blade designed for 20-inch decks, intended for mulching, bagging, or side-discharge use. It’s a direct aftermarket replacement for Greenworks electric mowers, specifically models 25022 and 25222.

Fitment & Compatibility

• Deck size: Must be exactly 20 inches (measure from blade tip to tip; verify your mower deck matches).
• Model compatibility: Direct fit for Greenworks 25022 and 25222. Replaces OEM part numbers 29172 and 33313250.
• OEM vs aftermarket: This is an aftermarket blade, not Greenworks-branded. It matches the OEM specs but may have slight finish or balance differences.
• Critical measurements: Check center hole diameter (usually 7/8” or 1” on Greenworks), blade thickness (around 0.150”), and overall length (20”). Measure your old blade if unsure.
• What to check before buying: Confirm your mower model is on the list, and verify the blade adapter/star pattern matches (Greenworks often uses a 5-point star drive). If your mower has a different mounting system, this won’t fit.

Key Things to Know

• Quality: Rated 3.9/5 out of 38 reviews. Some users report good durability for mulching; a few note balance issues out of the box (check with a blade balancer).
• Installation difficulty: Easy—requires a wrench and a block of wood to lock the blade. Torque to 30-40 ft-lbs. Use thread locker if your mower vibrates heavily.
• Common gotchas: The blade may be slightly heavier than OEM, which can affect battery runtime on cordless mowers. Also, verify the blade orientation (sharp edge facing deck opening) before tightening.
• Multi-purpose use: Works for mulching leaves and grass, but not ideal for heavy, wet clippings—clogging may occur if the deck isn’t clean.

Should You Buy It

Buy this if you own a Greenworks 25022 or 25222 and need an affordable, direct-fit replacement for mulching or general cutting. Skip it if your mower has a different deck size, non-standard blade mount, or if you demand OEM-level balance—consider an OEM blade for consistent performance.