Good used. Ford part number 18-6664-A Oil pump idler gear cover with shaft, not symmetrical.  The shaft may need to be replaced, the shafts are available new. Fits 1932, 1933, 1934, 1935, 1936, 1937, 1938, 1939, 1940, 1941, 1942, 1943, 1944, 1945, 1946, 1947, 1948 Flathead Ford V8 blocks except V8-60.