Bakelite control valve. Mounts on firewall. Controlled by the push-pull top switch rod. 6 or 12 volt. Also fits: 46-49 Buick 46-49 Cadillac 46, 49-50 Ford 49-50 Frazer 49-50 K... For 1946 1947 1948 1949 1950 Chevrolet Cars