MAXPRO Mower Mulching Blade High Lift Compatible with John Deere D140, D150, D155, D160, E140, E150, E160 Replaces AM137757, AM141035, GX21784, GY20852, GX21786 (GY20852)

What It Is

This is a high-lift mulching blade from MAXPRO, designed to replace OEM blades on select John Deere lawn tractors. It creates increased airflow to lift grass for a finer cut and better mulching, ideal for frequent mowing of standard residential lawns.

Fitment & Compatibility

Before buying, confirm your mower deck size—this blade fits 42-inch and 48-inch decks commonly found on John Deere D140, D150, D155, D160, E140, E150, and E160 models. It directly replaces OEM part numbers AM137757, AM141035, GX21784, GY20852, and GX21786. Measure your existing blade’s length (typically 20.5 inches) and center hole diameter (usually 1 inch) to ensure a match. Note: aftermarket blades may vary slightly in thickness or balance from OEM, so check for any deck clearance issues before tightening.

Key Things to Know

• Quality & durability: Made from heat-treated steel, these blades hold an edge well but may dull faster in sandy or rocky soil. Expect 20–30 hours of use before sharpening.
• Installation difficulty: Easy to swap with basic tools (socket wrench, jack or ramp). Torque the center bolt to 40–50 ft-lbs—overtightening can strip threads.
• Common gotchas: High-lift blades increase engine load and can throw debris; avoid using on dry, dusty lawns. They also require a mulching plug or kit (sold separately) for best results—without it, clippings may clump.
• Balance check: Always balance the blade after installation to prevent vibration and deck damage. Most users report good factory balance.

Should You Buy It

Buy this if you own one of the listed John Deere models and want an affordable, effective mulching upgrade over standard blades. It’s a solid choice for homeowners who mow weekly and want a clean, fine clippings finish without buying OEM. Skip it if you need a low-lift or bagging blade, or if your deck is over 48 inches.