HQPASFY GX22151 Mulching Blades & GX20072Deck Belt, Mower Blade & Belt Compatible with John Deere 42'' Mower D100 D105 D110 D120 D125 D130, Replaces GY20850 AM141033 GY20570

What It Is

This combo kit includes two mulching blades (GX22151) and one deck belt (GX20072) for John Deere 42-inch cutting decks used on select D100-series lawn tractors. The blades are designed to chop clippings finely for grass recycling, while the belt drives the deck spindle.

Fitment & Compatibility

Deck size must be 42 inches – measure your deck’s cutting width before buying. Compatible with John Deere models D100, D105, D110, D120, D125, and D130. The blades replace OEM part numbers GY20850 and AM141033 (also fit AM108876). The belt replaces OEM GY20570. Check your existing blade’s center hole diameter (should be 1-inch round) and overall length (approx. 16.5 inches). Belt length is 1/2” x 96.5” – verify your current belt’s part number if unsure. Not for 48-inch or 54-inch decks.

Key Things to Know

• Mulching vs. standard blades: These have a curved, high-lift design to recirculate clippings. If you bag or side-discharge, they’ll still work but won’t be optimized.
• Installation difficulty: Easy – requires a socket wrench and blade removal tool (or block wood to hold blade). Belt replacement is moderate; you’ll need to remove the deck or use a belt routing diagram.
• Check blade orientation: Mulching blades must be installed with the curved edge facing the deck (upward). Wrong side down will ruin cut quality.
• Quality: Aftermarket, but 4.8 stars from 21 reviews suggests good balance and durability. No known warping or imbalance issues reported.

Should You Buy It

Yes, if you own a John Deere D100-series with a 42-inch deck and want a ready-to-go blade-and-belt refresh for mulching. It’s a cost-effective alternative to OEM parts, with strong user feedback. Skip it if you need a standard lift blade for bagging or have a different deck size.