A failing or underperforming alternator can leave a Chevrolet Blazer struggling to keep its battery charged and electrical accessories running. This 220 Amp alternator is built for 2001–2005 Chevrolet Blazer models with the 4.3L V6 engine, delivering the higher charging capacity needed for vehicles running additional lighting, audio systems, inverters, or winches. It replaces AC Delco 321-1822 and 334-2523, and Delco 10480288, 15760058, and 10464462, making it a straightforward swap for a failed OE unit or an upgrade for added electrical demand. This alternator is available now from Denparts.