JYLEYJ 42-Inch Mulching Blades for John Deere Mowers — 2-Pack, Hardened Steel 21.25" x 2.75"

These are replacement mulching blades by JYLEYJ engineered to fit 42-inch John Deere mower decks, supplied as a two-blade pack that restores cutting performance and improves clippings distribution.

When your mower's blades are worn, cutting quality drops and grass clippings can clump or scatter unevenly. The JYLEYJ GX22151/GY20850 set replaces OEM numbers AM137333, AM137328 and AM141033, offering compatible geometry for many John Deere 42" decks and select Husqvarna applications. Built from hardened steel with an engineered stress profile, these blades are intended to resist cracking, bending and accelerated wear so you can mow more efficiently with fewer replacements.

Which mower models will these blades fit?

These blades are designed for a broad range of John Deere lawn tractors and mowers that use a 42-inch deck. Always verify your deck size and blade mounting pattern before ordering to ensure proper fit and safe operation.

• Fits John Deere D100, D105, D110, D120, D125, D130 with 42" decks
• Compatible with LA100, LA105, LA110, LA115, LA120, LA125, LA135 42" models
• Works with models 102, 105, 107S, 115, 125, 135 and E100–E130 series using 42" decks
• Also fits S100–S120, S240, X105–X125, X300 and Z225–Z235 provided the blade pattern matches

How do these blades improve cutting and mulching performance?

The blade profile and sharpened edges are optimized for mulching, recutting clippings repeatedly to produce finer particles that return nutrients to the lawn. Their balance and reinforced throat reduce vibration and deliver a more uniform cut, helping prevent scalping and striping when properly installed and maintained.

• 21 1/4" length and 2 3/4" width for correct deck coverage
• Thicker 0.157" steel resists deformation under load
• 7-point star center hole matches common John Deere mounting patterns
• Engineered stress distribution to reduce cracks and wear

What are the specifications and materials of these replacement blades?

Each blade measures 21.25 inches long, 2.75 inches wide and 0.157 inches thick. The center mounting uses a 7-point star pattern for secure attachment. The steel construction is heat-treated and shaped to improve strength while maintaining a sharpenable edge for periodic reconditioning.

• Blade length: 21 1/4" (54 cm) — standard for many 42" decks
• Blade thickness: 0.157" for improved rigidity and longevity
• Center hole: 7-point star pattern for OEM-style mounting
• Pack contents: two replacement blades per purchase

How do I maintain and install these blades safely?

Installation requires raising the mower safely, removing the battery and following manufacturer torque specs for blade bolts. Keep blades sharp and balanced — sharpen both edges evenly and check for nicks; replace if severely damaged. Regular inspection prevents vibration-related issues and ensures even cutting.

• Disconnect spark plug and stabilize mower before working underneath
• Use correct bolts and torque to OEM specifications when mounting
• Sharpen and balance blades periodically for best performance
• Replace blades if bent, cracked, or excessively worn

Who is this for: The JYLEYJ GX22151/GY20850 two-pack is aimed at homeowners and groundskeepers who own John Deere or compatible mowers with a 42-inch deck and need durable mulching blades that match OEM fitment. It suits users who prefer to extend mower life with quality replacements, want improved mulching results, and value a product backed by a 24-month after-sales warranty. If you’re unsure about fitment, check your mower’s blade part number or mounting pattern before purchase to confirm compatibility.