2 Pcs Mower Blades for 42-inch Cutting Deck John Deere D100 D110 D125 S100 S130 S240 LA100 LA105 LA120 LA135 E100 E120 E130 GX22151 GY20850 AM137333 50401780 AM137328 M154061 M154060

What It Is

This is a set of two replacement mower blades designed for 42-inch cutting decks on popular John Deere lawn tractors and zero-turn models. They are intended for standard residential grass cutting, not heavy-duty mulching or bagging.

Fitment & Compatibility

Before buying, verify your mower has a 42-inch deck (measure deck width, not machine model). These blades fit John Deere D100, D110, D125, S100, S130, S240, LA100, LA105, LA120, LA135, E100, E120, E130, and similar models with OEM part numbers GX22151, GY20850, AM137333, 50401780, AM137328, M154061, M154060. They are aftermarket replacements, not OEM. Check blade length (approx. 21 inches), center hole size (usually 1-inch), and thickness (about 0.2 inches) against your old blade. If your deck uses a different spindle or offset, these won’t fit.

Key Things to Know

• Quality: Aftermarket blades, likely stamped steel. Sharp enough for grass but may dull faster than OEM. Good for budget-conscious users.
• Installation: Easy with basic tools (socket wrench, jack stands). Remove spark plug wire first. Torque bolts to 30-40 ft-lbs. Use thread locker if bolts are loose.
• Gotchas: Balance before installing—unbalanced blades cause vibration and cut poorly. Check for deck damage or worn spindles while you’re under there. These are not mulching blades; use with standard discharge or bagger.

Should You Buy It

Buy if you have a compatible 42-inch John Deere and want a cost-effective replacement for regular grass cutting. Avoid if you need OEM longevity, mulching capability, or have a different deck size. For the price, it’s a solid value for DIY maintenance.