GX22151 Mower Blades for John Dee re 42" Deck, GY20850 Mulching Blades for JD 102 115 125 135 D100 D110 D125 D130 Lawn Tractor, Replace AM141033 AM137333, 2 Pack

What It Is

This is a 2-pack of replacement mulching blades designed for John Deere 42-inch decks, intended to chop grass clippings finely for nutrient recycling. They replace OEM part numbers AM141033 and AM137333.

Fitment & Compatibility

Before buying, confirm your mower has a 42-inch deck (measure blade tip to tip). These blades fit John Deere models: 102, 115, 125, 135, D100, D110, D125, D130. They are aftermarket replacements for OEM AM141033 and AM137333. Check your current blade’s center hole size (should be 1-inch) and overall length (21 inches). Also verify the blade thickness matches your spindle—these are typically 0.25 inches. Not compatible with 48-inch or 54-inch decks.

Key Things to Know

• Quality: 4.6/5 stars from 193 reviews suggests good durability and sharpness out of the box, but aftermarket steel may be slightly softer than OEM.
• Installation: Easy DIY job with a socket wrench and blade removal tool (or a block of wood to prevent spinning). Torque bolts to 30-40 ft-lbs.
• Gotcha: Mulching blades have a more curved design than standard blades—they work best with a mulching plug/kit installed and dry grass. Wet grass will clump.
• Balance: Always check blade balance before installing; unbalanced blades cause vibration and damage spindles.

Should You Buy It

If you own a compatible John Deere 42-inch deck model and want affordable mulching blades that are well-reviewed and easy to install, this 2-pack is a solid value. It’s ideal for homeowners mulching dry, normal lawns—not for heavy-duty commercial use or bagging.