| Blade Width | 2.25" |
|---|---|
| Thickness | 0.134 |
| Blade Length | 20-7/8|inch[1005] |
| Outer Hole Diameter | 13/32 |
| Center Hole Size | Diamond |
| Center-to-Center | 2-1/2 |
| OffSet | 5/16 |
| Air Lift | 3/4 |
| Blade Material | Steel |
Oregon® 20-7/8" Blade for 21" Craftsman Lawn Mowers, OEM Part Numbers CMXGZAM100142, 742‑05643
Part# R-21-B4
This product is only available through retailers or servicing dealers.
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This 20-7/8" Oregon® blade was designed as a replacement for Craftsman lawn mowers, OEM part number CMXGZAM100142, 490-100-C142, 490-100-F142, 490-100-Y142, 742-05643, DXGX100142, 742P05643. Made from premium hardened steel, each blade is carefully monitored for material integrity, ensuring balanced cuts, reduced vibration, and long-lasting performance. The cutting edge comes pre-sharpened at an optimal angle for clean and consistent cuts that will help keep your yard looking green and healthy. Backed by a legacy of craftsmanship that began in 1947, Oregon products undergo a rigorous 26‑point certification process to ensure their safety, quality, durability, and performance. WARNING: This product can expose you to Nickel, a chemical known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
Product Details
- VERIFY FIT: Replaces OEM blade for Craftsman lawn mowers with 21" decks: part numbers CMXGZAM100142, 490-100-C142, 490-100-F142, 490-100-Y142, 742-05643, DXGX100142, 742P05643; length 20-7/8" width 2.25" center hole diamond
- COMPATIBLE MOWERS: Craftsman M220
- MATERIAL INTEGRITY: Made with premium hardened steel and carefully monitored to ensure each blade’s material delivers tough, consistent, long-lasting performance
- PRE-SHARPENED EDGE: Cutting edge pre-sharpened at optimum angle for a clean, even cut from the first mow, reducing the chance of tearing, which can lead to the browning of grass tips due to infection
- OREGON® QUALITY: Since 1947, trusted worldwide for our unparalleled quality and control standards, Oregon® products undergo a rigorous 26-point certification process to meet the highest standards for safety and durability