The GM 2225 all aluminum radiator is a replacement for 1968-1971 Chevrolets, Pontiacs, and Buick V8s. Manufactured in the USA using controlled atmosphere brazing, the epoxy-free core has two rows of 1-inch tubes and the core measures 28-1/4 x 18-1/4  x 2-1/4 inches. Has die-stamped components to eliminate weld related failures while providing uniform high standard quality. Has a 1.5-inch inlet and outlet. Each unit is individually tested prior to shipping and guaranteed to be 100% leak-free.