unopened original boxes which will be opened prior to shipment, probably OEM part because made close to Detroit in same era, box says for all motor block, by-pass, or hoseline installations, your vehicle will thank you for using these instead of a modern era generic part, nos, nors, aaca 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951