Davico OE replacement catalytic converters (48-state legal - no ca, no ny). Davico's 48-state legal line of OE replacement catalytic converters is specifically designed to work like the original unit that came installed on your vehicle, delivering solid performance and an exact fit. Each and every one of Davico's OE replacement catalytic converters is crafted within strict standards. Since 1987, Davico has specialized in manufacturing hard-to-find catalytic converters for the automotive aftermarket. Proudly manufactured in America. Features OE-spec air tube connections and flanges. Exact fit.