Aeagle M145476 High Lift Blades for John Deere X300 X304 X320 Z425 GX255 GX325 LT180 LT190 48 inch Mower Deck Replace M145476 M127500 M127673 AM141907 AM148663 M141794 (Black)

What It Is

The Aeagle M145476 High Lift Blades are aftermarket replacement blades designed for 48-inch mower decks on select John Deere lawn tractors and zero-turn mowers. Their high-lift design increases airflow for superior grass clipping discharge and bagging performance compared to standard blades.

Fitment & Compatibility

• Deck size: Fits only 48-inch John Deere mower decks (models: X300, X304, X320, Z425, GX255, GX325, LT180, LT190).
• OEM cross-reference: Replaces John Deere part numbers M145476, M127500, M127673, AM141907, AM148663, and M141794.
• Measurements: Verify blade length (19.5 inches), center hole diameter (1 inch), and blade thickness (0.25 inches) against your current blades. High-lift blades may not fit decks with low clearance or tight spindle housings.
• Aftermarket note: Aeagle is a non-OEM brand. Check that your deck uses a standard spindle mount (no offset or odd hole patterns).

Key Things to Know

• Installation difficulty: Easy if you have a socket set and jack stands. Use a torque wrench to tighten blade bolts to 40–50 ft-lbs. Always disconnect the spark plug first.
• High-lift vs. low-lift: These blades are louder and require more engine power, but they improve bagging and discharge. Not ideal for mulching—use dedicated mulching blades for that.
• Quality: Made of heat-treated steel, but some users report slight balance issues out of the box. Check balance with a blade balancer before install; file the heavy side if needed.
• Durability: Expect 25–50 hours of life in normal conditions. Avoid hitting rocks or roots—these blades are less forgiving than standard ones.

Should You Buy It

If you have a compatible 48-inch John Deere deck and prioritize strong bagging or side-discharge performance, this is a solid budget-friendly choice. But if you mulching heavily or need OEM-level precision, consider spending more on genuine John Deere blades.