ILONPA GX20249 42 inch Mulching Blades for L111 John Deere L110 L100 L105 L107 L108 L111 L118 L17.542 L1742 Lawn Tractor with 42" Mower Deck GX20433 GX20249 GY20567 / 3-in-1 Blade / 2-Pack, Black

What It Is

The ILONPA GX20249 is a 2-pack of 42-inch mulching blades designed for a wide range of John Deere L-series lawn tractors with a 42-inch mower deck. These 3-in-1 blades can mulch, bag, or side-discharge, making them suitable for routine mowing and leaf management on residential lawns.

Fitment & Compatibility

Before buying, confirm your mower deck is exactly 42 inches (measured cutting width, not chassis). These blades fit John Deere L100, L105, L107, L108, L110, L111, L118, L17.542, and L1742 models. They replace OEM part numbers GX20433, GX20249, and GY20567. Measure your existing blade’s length, center hole diameter, and offset to match—these are aftermarket blades, not OEM, but dimensions should match stock. If your deck is 42 inches but a different brand (e.g., Craftsman, MTD), these likely won’t fit.

Key Things to Know

• Installation difficulty: Easy for a DIYer with basic tools (socket wrench, torque wrench). Lift the deck safely, remove the old blade, and install the new one with the “grass side” up.
• Sharpness out of box: Some users report they’re sharp but may need a quick touch-up for optimal performance (common with aftermarket blades).
• Durability: Made of heat-treated steel, but aftermarket blades may wear faster than OEM on heavy use or rocky soil. Inspect for bending after hitting debris.
• Balance check: Always test blade balance before installing to avoid vibration and deck damage. A simple nail-in-wall method works.

Should You Buy It

This is a solid budget option if you own a compatible John Deere L-series with a 42-inch deck and need a functional 2-pack for routine mulching or bagging. It’s not for heavy-duty commercial use or non-Deere decks. If you prefer exact OEM fit and longer wear, stick with John Deere branded blades—but at this price, it’s a good value for casual homeowners.