Aeagle GY20852 48'' Mulching Blades for John Deere D140 D160 S140 E170 LA145 Z355E D155 E140 E160 LA130 48 Inch Zero Turn Mower Lawn Tractor Replace AM141035 GX21784, 7 Point Star, 3 Pack (Black)

What It Is

The Aeagle GY20852 is a 3-pack of 48-inch mulching blades designed for select John Deere lawn tractors and zero-turn mowers. They replace OEM part numbers AM141035 and GX21784, providing fine-cut mulching for grass clippings to decompose quickly.

Fitment & Compatibility

Before buying, confirm these three things:

• Deck size: Your mower must have a 48-inch cutting deck. Measure the blade length (tip to tip) to verify—Aeagle lists 48 inches, but actual length may vary slightly.
• Mounting pattern: These blades use a 7-point star center hole. Check your existing blade’s center hole shape; a 5-point star or round hole will not fit.
• Model compatibility: They fit John Deere models D140, D160, S140, E170, LA145, Z355E, D155, E140, E160, LA130, and others with a 48-inch deck and 7-point star. Cross-reference your model with Aeagle’s list or your OEM part number (AM141035 or GX21784). If your deck is 42 or 54 inches, these won’t work.

Also verify deck clearance: mulching blades have a higher lift than standard blades, so ensure your deck’s internal baffles and discharge chute accommodate them.

Key Things to Know

• Quality: Black powder-coated finish resists rust, but the blades are stamped steel (not hardened). Expect shorter edge life than OEM or premium brands—plan to replace every 1-2 seasons.
• Installation: Simple bolt-on job. Use a torque wrench (tighten bolts to 40-50 ft-lbs). The 7-point star aligns easily, but check that the blade orientation allows the cutting edge to face the direction of rotation.
• Common gotcha: Mulching blades require sharp edges. The Aeagle blades come sharp, but dull quickly on sandy soil or tough grass. Sharpen after 10-15 hours of use, or replace the set.
• Noise and lift: They produce more aerodynamic noise than standard blades. If your deck is low to the ground, the higher lift can cause scalping on uneven terrain.

Should You Buy It

Buy these if you own a compatible John Deere with a 48-inch deck, want an affordable 3-pack for mulching duty, and are willing to sharpen or replace blades annually. Skip them if you need premium durability for heavy commercial use or have a different deck size/center hole pattern—the fitment is specific and non-negotiable.