2PK Toothed Mulching Mower Blade for 42" John Deere E100, E110, E120, E130, E140

What It Is

This is a set of two toothed mulching blades designed for 42-inch cutting decks on select John Deere 100-Series lawn tractors. They chop clippings finer than standard blades, improving nutrient recycling and reducing bagging frequency.

Fitment & Compatibility

Check these before buying:

• Deck size: Must be exactly 42 inches (not 38, 48, or 54). Confirm on your mower deck or owner’s manual.
• Model compatibility: Fits John Deere E100, E110, E120, E130, and E140. Does not fit older 100-series (e.g., L100, LA105) or X300 series without verifying spindle pattern.
• OEM vs aftermarket: Replaces OEM part AM137396. Not a John Deere Genuine part, but matches dimensions and hole pattern.
• Measurements: Blade length is 21 inches, center hole 1 inch diameter, drive pin holes 0.5 inch diameter. Measure your old blade or check spindle before ordering.

Key Things to Know

• Installation difficulty: Easy—requires a socket wrench and torque wrench (40-50 ft-lbs recommended). No special tools needed.
• Quality: Heat-treated steel with coated edge; holds sharpness longer than basic stamped blades. Some users report minor balancing issues—check balance with a balancer before installing.
• Gotcha: These are dedicated mulching blades. If you switch between bagging and mulching, you’ll need to swap blades. Not for side-discharge use.
• Set includes two blades—verify your deck uses two blades (most 42” Deere decks do). Some 42” models use three; check your deck’s blade count.

Should You Buy It

If you own a 42-inch John Deere E100-series and want finer clippings with less bagging, this is a solid, well-reviewed upgrade. Just confirm your deck’s blade count and spindle pattern first—fitment is specific, not universal.