2 Pack GY20850 Mower Blades with Hardware for D100 D105 D110 D130 E100 E120 E130 E110 La105 La115 S100 S120 S130 S240 X300 Replace John Deere 42 Inch Mower Blades GX22151, AM141033, Mulching

What It Is

This is a 2-pack of 42-inch replacement mower blades designed for select John Deere lawn tractors, with included hardware for mulching applications. They fit models like the D100, D105, D110, D130, E100, E120, E130, E110, LA105, LA115, S100, S120, S130, S240, and X300.

Fitment & Compatibility

Before buying, confirm your mower deck is 42 inches (measured cutting width, not blade length). The blades replace John Deere OEM part numbers GX22151, AM141033, and are marketed for 42-inch decks on the listed D, E, LA, S, and X300 series. Measure your existing blade length, center hole diameter, and offset (if any) to verify fit—aftermarket blades can vary slightly. Check that your deck uses a 5-point star center hole (common on these models). The included hardware (bolts, washers, nuts) may not match your original torque specs, so reuse OEM hardware if you prefer.

Key Things to Know

• Quality: At $29.99 for two blades, these are budget aftermarket. Expect decent mulching but shorter lifespan than OEM John Deere blades (GX22151 or AM141033). Some users report faster dulling on rough terrain.
• Installation: Easy for DIYers with basic tools (socket wrench, torque wrench). Use a blade removal tool or block the blade to prevent spinning. Torque bolts to 40-50 ft-lbs—overtightening can strip threads.
• Common gotchas: The included hardware may be lower grade than OEM—inspect for rust or weak threads. Balance the blades before install (hang them on a nail; if one side dips, it’s unbalanced). Uneven cut often means unbalanced blades or worn spindles, not the blades themselves.
• Deck compatibility: These are for 42-inch decks only. Do not use on 38-inch or 48-inch decks—wrong length will damage the mower.

Should You Buy It

Buy this 2-pack if you need a low-cost, quick replacement for a 42-inch John Deere lawn tractor and don’t mind replacing blades more often than OEM. It’s a solid value for light-to-medium residential use on flat lawns, but skip it if you mow heavy grass, rocky ground, or demand long blade life—invest in OEM or premium aftermarket for durability and consistent cut quality.