KANXAJJY GX22151 Toothed Mulching Lawn Mower Blades — 2-Pack for 42" John Deere Decks, 21-3/8" 7-Point Star, Powder-Coated Steel

These are two high-grade KANXAJJY GX22151 toothed mulching blades designed to replace OEM GY20850/AM131033-family parts for 42-inch John Deere decks.

If your John Deere riding mower with a 42" deck needs sharper, longer-lasting cutting edges that support mulching and even discharge, this two-piece blade set is sized and drilled to match many factory OEM numbers. Constructed from refined steel and finished with a protective powder coating, the blades are shaped with teeth to improve clippings circulation and reduce visible striping. Before ordering, confirm the 7-point star center hole and the 21-3/8" length to ensure fitment.

Which mower models will these GX22151 blades fit?

These blades are built to be compatible with a broad range of John Deere residential and lawn tractors that use a 42" cutting deck and the 7-point star hub. They replace several OEM part numbers, so cross-checking your old blade or owner's manual is recommended.

• Fits John Deere D100, D110, D125 and many D-series 42" deck models.
• Designed for E100/E120 series and LA/ LT residential tractors listed in specifications.
• Works with S100/S130, X100/X300 series and select Z-series zero-turns requiring 21-3/8" blades.

How do these toothed mulching blades improve lawn performance?

The toothed profile helps lift and recut grass clippings so pieces are finer and distribute more evenly back into the turf. That supports quicker decomposition and a cleaner cut appearance compared with dull or basic straight blades.

• Toothed cutting edge increases airflow and clipping recirculation for better mulching.
• Powder-coat finish resists rust for longer life between replacements.
• Precise thickness and center-star hole match ensures stable, vibration-minimized operation.

What are the exact dimensions and materials of each blade?

Each blade in this 2-piece set is manufactured with consistent dimensions to match OEM specifications and maintain deck balance. The steel composition and protective coating are chosen to resist wear while keeping weight suitable for proper blade speed and safety.

• Length: 21-3/8" (fits 42" decks).
• Width: 2-1/2"; Thickness: 0.157" for strength and stability.
• Center: 7-point star mount; material: high-grade steel with powder coat.

How should I install and maintain these replacement blades?

Installation follows the same procedure as OEM blade swaps: secure the mower, remove old blades, align the star hole and torque to manufacturer specs. Periodic sharpening and inspection for bends or nicks will extend blade life and keep cut quality consistent.

• Always disconnect spark plug and use appropriate tools and torque settings.
• Check for balance after installation; sharpen if nicked but replace if bent.
• Store in a dry place; recoat scratches to slow corrosion.

Who is this for: Homeowners and lawn-care enthusiasts who own John Deere riding mowers or tractors with a 42" deck and a 7-point star hub, and who want a cost-effective, OEM-compatible mulching upgrade. These blades suit those replacing worn or damaged parts, upgrading to a toothed mulching profile, or keeping a spare set on hand for seasonal maintenance.