Main Bearing Cap set, each cap is different.  Ford V-8 1939, 1940, 1941, 1942, 1943, 1944, 1945, 1946, 1947, 1948 USED.  Main big bores 2.670-2.671.

You should expect to line bore these caps to fit your block.  Buying a set gives you access to our main cap library at no extra cost except shipping both ways. 

Individual caps are available at $20 each.