MAXPRO 3 Packs Mower Mulching Blade Compatible with John Deere 48in Mower Z425 X300 X320 X350 Replaces M127673 M146715 AM141907 AM148663,UC22009(M146715)

What It Is

This is a set of three mulching blades from MAXPRO designed for 48-inch John Deere lawn tractors. They replace OEM parts M127673, M146715, AM141907, and AM148663, and are intended for use on Z425, X300, X320, and X350 models.

Fitment & Compatibility

Before buying, confirm your mower deck measures exactly 48 inches—these blades won’t fit 42-inch or 54-inch decks. The blade length is 18.5 inches, with a 1-inch center hole and a 0.25-inch thickness. They are listed as direct replacements for the OEM part numbers above, but check your current blade’s part number (stamped on the blade) to be sure. Also verify your spindle pattern: these use a standard 5-point star center hole, common on John Deere models but not universal across all brands.

Key Things to Know

• Quality: Made from heat-treated steel, these are durable and resist bending, but may not hold an edge as long as premium OEM blades on heavy use.
• Installation: Straightforward swap—remove the old blade, clean the spindle, and torque the bolt to 70–90 ft-lbs. Use a blade removal tool or block the blade to prevent spinning.
• Gotcha: Mulching blades are thicker and have a higher lift than standard blades, which can reduce bagging performance. If you switch between mulching and bagging, you’ll need a separate set.
• Pack size: You get three blades, exactly what a 48-inch deck needs—no extras or missing pieces.

Should You Buy It

If you own a 48-inch John Deere tractor (Z425, X300 series) and want a budget-friendly mulching upgrade, this set is a solid value. It’s not for heavy commercial use—expect to sharpen or replace every season—but for residential mowing, it cuts well and saves money over OEM.