M145476 M127500 High Lift Mower Blades Compatible with 48" Deck X300 X320 X350 Z425 GX255 GX325 LT180 LT190 Lawn Mower, Replace M127673 M146715 AM141907 AM148663 UC22009, 3 Pack

What It Is

This is a set of three high-lift lawn mower blades designed for 48-inch cutting decks on select John Deere and other compatible lawn tractors. The high-lift profile creates stronger airflow for improved grass clipping discharge and bagging, making it ideal for mulching or collecting leaves.

Fitment & Compatibility

• Deck size: 48 inches (three blades, each roughly 16.5 inches long). Measure your existing blade length and center hole diameter to confirm.
• Compatible models: John Deere X300, X320, X350, Z425, GX255, GX325, LT180, LT190, and others with a 48-inch deck using three blades.
• OEM cross-references: Replaces M127673, M146715, AM141907, AM148663, UC22009. Verify your current OEM part number matches one of these.
• Aftermarket note: This is a non-OEM part. Confirm your deck’s spindle hole pattern (usually a 5-point star or 7-point star) matches the blade’s center hole design. Check blade thickness (typically 0.25 inches) to ensure proper fit.

Key Things to Know

• High-lift design improves bagging but may increase engine load and wear on belts/deck components over time compared to standard lift blades.
• Installation is straightforward with a socket wrench and blade removal tool. Torque blade bolts to 70-80 ft-lbs. Always disconnect the spark plug first.
• Balance is critical – these blades may require balancing after sharpening or if they arrive unbalanced. Use a blade balancer to avoid vibration and deck damage.
• Check deck clearance – high-lift blades can be slightly taller than OEM; ensure they don’t contact the deck housing when installed.

Should You Buy It

If you have a compatible 48-inch deck and need better bagging or discharge performance for thick grass or leaves, this three-pack offers good value at $29.49. It’s a solid aftermarket alternative to OEM blades, but verify your exact deck model and spindle pattern before purchase. Not recommended for decks with limited clearance or for users who prefer standard-lift blades for low-maintenance mowing.