Grasscool Z355e 48 inch Blades Replace John D-eere M145476 UC22009 for Z425 Z445 Z325E Z525E 48'' Deck Mower with Circle Mounting Pattern M127673 M127500 (High-Lift)

What It Is

This is a set of three high-lift lawn mower blades designed for 48-inch cutting decks, specifically as an aftermarket replacement for John Deere OEM parts M145476, UC22009, M127673, and M127500. They are intended for residential or light commercial mowing where superior grass clipping discharge and bagging performance is needed.

Fitment & Compatibility

Before buying, verify your mower has a 48-inch deck and uses a circle mounting pattern (three blades with a central hole and offset center bolt). These blades fit John Deere ZTrak models: Z425, Z445, Z325E, Z525E, and select older Z355e units. They also work on some Z600 series decks with the same 48-inch stamped deck. Measure your existing blades: length should be 16.5 inches, width about 2.5 inches, and center hole diameter 7/16 inch. Confirm your deck uses high-lift (not low-lift or mulching) blades—high-lift have more aggressive upward curvature. If your deck is a 48-inch fabricated (not stamped) or has a different bolt pattern, these will not fit.

Key Things to Know

• Quality vs OEM: Grasscool blades are made from hardened steel but may be slightly thinner than OEM John Deere blades. They sharpen well but may require balancing before installation.
• Installation difficulty: Easy—use a socket wrench and block the blade to prevent spinning. Torque bolts to 45-55 ft-lbs. Always wear gloves; edges are sharp.
• Common gotchas: The high-lift design increases airflow, which can cause more vibration if blades are unbalanced. Check for deck debris before installing. Do not use on decks designed for mulching or low-lift blades—poor cut and potential damage.
• No warranty from John Deere: This is an aftermarket part. If you need exact OEM fit or longer lifespan, stick with genuine Deere blades.

Should You Buy It

Buy these if you have a compatible 48-inch John Deere ZTrak with a stamped deck and want a budget-friendly high-lift blade that delivers good discharge and bagging for regular lawn mowing. They are a solid value for the price, but skip them if you need OEM precision for a commercial operation or if your deck requires a different blade type.