GX22151 Mower Blades Compatible with John Dee re 42" Deck Riding Mowers, Gator Mulching Blades Fit for John Dee re 102 115 125 135 D130 D100 D105, Replace GY20850 AM141033, 2 Pack

What It Is

This is a 2-pack of aftermarket Gator-style mulching blades designed for 42-inch deck John Deere riding mowers. They chop clippings finer than standard blades for better lawn feeding and bagging.

Fitment & Compatibility

• Deck size: Only for 42-inch cutting decks. Measure your deck or check your mower model.
• Fits John Deere models: 102, 115, 125, 135, D100, D105, D130, and others with a 42" deck.
• Replaces OEM: GY20850 and AM141033. Verify your mower uses these part numbers.
• Measurements: Blade length is approximately 21 inches; center hole diameter is 1 inch (check your spindle bolt size). Confirm before ordering.
• Note: These are aftermarket – not OEM John Deere. Quality is generally good, but tolerance may vary slightly.

Key Things to Know

• Mulching performance: The Gator-style serrated edge and curved wing design give finer clippings than standard blades, reducing thatch.
• Installation: Easy with basic tools (socket wrench, jack/ramps). Use a blade removal tool or block the blade to prevent spinning. Torque bolts to 70-90 ft-lbs.
• Common gotcha: These are thicker than OEM blades – check clearance under your deck to avoid hitting the shell. Also, they may require balancing after install for vibration-free operation.
• Sharpness: Pre-sharpened, but will need re-sharpening after ~10 hours of heavy use. Replace if bent or cracked.

Should You Buy It

Buy this if you have a 42-inch John Deere lawn tractor (like D100/D105) and want better mulching than standard blades at a budget price. Skip if you need OEM fit or have a different deck size – these won’t work on 38" or 48" decks. Good value for the money with solid reviews.