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, Black

What It Is

This is a set of three 48-inch high-lift mower blades (UC22009 / M145476) designed for John Deere 48" EZtrak and select X300 series garden tractors. High-lift blades create stronger upward airflow to lift grass for a cleaner cut and better bagging performance.

Fitment & Compatibility

• Deck size required: 48-inch cutting deck only. Measure your deck width before ordering.
• Fits these John Deere models: Z425, Z445, Z355E, Z325E, Z525E, SST18, X300, X304, X320, GX325, GX345, X380, X384 (with 48" deck).
• OEM cross-references: Replaces John Deere parts M127673, M127500, M145476. Confirm your current blade part number matches one of these.
• Measurement check: Each blade is approximately 17.5 inches long, with a 1-inch center hole and 3/8-inch offset. Verify your spindle pattern accepts these dimensions.
• Aftermarket fit: Not OEM; tolerances may vary slightly. Best for decks in good condition without spindle damage.

Key Things to Know

• Bagging boost: High-lift design significantly improves grass collection in baggers and side-discharge. Not ideal for mulching—tends to leave clippings on top.
• Installation: Straightforward swap—remove center bolt, replace blade, torque to 40-50 ft-lbs. Use a blade stop tool or block to prevent rotation.
• Watch for balance: Aftermarket blades sometimes come unbalanced. Check with a blade balancer before installing to avoid vibration and spindle wear.
• Grass conditions: Best for dry-to-normal grass. Wet or tall grass may cause clumping due to high lift.

Should You Buy It

If you own a compatible John Deere 48" deck and want better bagging performance without paying OEM prices, these blades are a solid value. Avoid them if you primarily mulch—stick with a low-lift or mulching blade for that job.