UC22009 M145476 48 inch High Lift Blades for John Deere Z425 Z445 Z355E Z325E Z525E SST18 X300 X304 X320 GX325 GX345 X380 X384 Z355E 48" Deck EZtrak Mower Lawn Tractor Garden M127673 M127500, Blue

What It Is

This is a set of three 48-inch high-lift lawn mower blades (model UC22009) designed for John Deere EZtrak Z425, Z445, and select X300-series tractors. High-lift blades create stronger upward airflow to discharge clippings more efficiently, making them ideal for bagging or side-discharge in tall or wet grass.

Fitment & Compatibility

• Deck size: Only fits 48-inch cutting decks—measure your deck width before buying.
• Fitment: Compatible with John Deere Z425, Z445, Z355E, Z325E, Z525E, SST18, X300, X304, X320, GX325, GX345, X380, X384, and Z355E models with 48" EZtrak decks.
• OEM cross-references: Replaces John Deere M145476, M127673, and M127500. Verify your current blade part number against these.
• Measurements: Blade length is 16.5 inches, center hole is 1-inch, and offset (if any) matches OEM. Confirm your spindle hole pattern matches.
• Aftermarket note: Not OEM John Deere; check that the blade thickness (typically 0.25 inches) and mounting hardware are compatible with your spindles.

Key Things to Know

• Installation: Easy swap with basic tools (socket wrench, torque wrench recommended). Use thread-locker on bolts to prevent loosening.
• Quality: Blue coating resists rust, but high-lift blades wear faster in sandy soil or rocky terrain. Inspect for bending after heavy use.
• Performance: Produces better lift than standard blades, but can strain the engine in thick grass—don’t mow too fast.
• Gotcha: High-lift blades may throw debris farther; keep bystanders clear. Not ideal for mulching—use dedicated mulching blades for that.

Should You Buy It

If you bag or side-discharge on a 48-inch John Deere deck and want improved clipping evacuation, this set is a solid value at $44.99 with good user ratings. Skip it if you mulch exclusively or have a different deck size.