[V12Bill]

Your 1946 truck should be a 59A engine and as such, should have a 50# oil pump in it. The 8BA engine that came out for the 1948 F1 and the later passenger car had an 80 # oil pump and thus needed the 80# sending unit. As stated above, the 50 # units were not marked until the 80# units came out because the only unit available was a 50# unit.