M145476 Mower Blades Fit for John Dee re 48" Deck, M127500 High Lift Blades for John Dee re 48in Mower Z425 X300 X320 X350, Replace for M127673 M146715 AM141907 AM148663, 3 Pack

What It Is

This is a 3-pack of high-lift replacement blades (M145476 / M127500) designed for 48-inch John Deere mower decks. High-lift blades create stronger upward airflow for better grass clipping discharge and bagging performance, making them ideal for tall or damp grass.

Fitment & Compatibility

• Deck size: Only fits 48-inch John Deere mower decks. Measure your deck width to confirm.
• Models: Compatible with Z425, X300, X320, X350, and other 48-inch deck tractors/zero-turns using OEM part numbers M127500, M127673, M146715, AM141907, AM148663.
• OEM vs aftermarket: Aftermarket replacements for the listed OEM parts. Verify your existing blade’s center hole (usually 1” or 7/8”) and overall length (approx. 17.5”)—measure before ordering.
• Check your spindle: Ensure your deck uses three separate blades (not a single long blade). Also confirm your spindle bolt size (typically 5/8” or 3/4”) to ensure the blade hole matches.

Key Things to Know

• High-lift design: These blades produce more lift than standard/medium-lift blades. They’re excellent for bagging but may create more dust on dry, dusty lawns.
• Installation difficulty: Easy swap with basic hand tools (socket wrench, torque wrench). Always torque spindle bolts to spec (usually 70–90 ft-lbs) and use thread locker if recommended.
• Common gotcha: High-lift blades can strain the engine on tall, wet grass if you mow too fast. Slow down to avoid bogging.
• Quality: Most users report good balance and sharpness out of the box. Check for burrs on the cutting edge and file them down if needed.

Should You Buy It

If you own a 48-inch John Deere (Z425, X300 series, etc.) and want better bagging or discharge performance, this 3-pack is a solid, budget-friendly choice. Measure your existing blade dimensions and spindle bolts first to confirm fit. Skip if you only mulch or prefer standard lift blades.