ILONPA GY20852 48 inch 7-Star Mulching Blades for John Deere GX21784 D140 E140 D160 E150 E160 E170 LA145 LA140 LA155 155C 48" Decks 100 Series Tractor Zero Turn Mower GX21785 AM137757 2-Pack, Black

What It Is

The ILONPA GY20852 is a set of two 48-inch, 7-star mulching blades designed to replace OEM blades on select John Deere lawn tractors and zero-turn mowers with 48-inch decks. These blades are optimized for fine grass clipping mulching, reducing the need for bagging.

Fitment & Compatibility

• Deck size: Only fit 48-inch mower decks—measure your deck width before ordering.
• Model check: Compatible with John Deere D140, E140, D160, E150, E160, E170, LA145, LA140, LA155, 155C, and 100 Series tractors, plus zero-turn models using a 48" deck.
• OEM cross-reference: Replaces John Deere part numbers GX21784, GX21785, AM137757.
• Measurement: Blade length must be exactly 48 inches (overall width of the set). Center hole and star pattern match OEM specs—verify your spindle’s star count (7-star) before buying.

Key Things to Know

• Mulching performance: The 7-star design creates fine clippings that decompose quickly; not ideal for bagging or side-discharge use.
• Installation: Direct bolt-on for most listed models, but check your blade bolt torque spec (typically 70–90 ft-lbs). Use thread locker if recommended by your manual.
• Durability: Made from heat-treated steel, but aftermarket blades may wear faster than OEM on heavy-duty or rocky lawns.
• Sharpening: Can be sharpened a few times, but the star pattern makes balancing critical—always balance after sharpening.

Should You Buy It

If you own a compatible John Deere with a 48-inch deck and want a budget-friendly mulching upgrade over standard blades, this 2-pack delivers solid performance for the price. Avoid if you primarily bag or need heavy-duty cutting in thick or wet grass—OEM or gator-style blades may last longer.