The Mack B-Series was a chassis manufactured by Mack Trucks Inc. 908 trucks were produced between 1953 and 1966. The Mack B-Series came in four models, The B75, the B85, the B95 and B125. The B75s and B85s had a 750 GPM pump, The B95s had 1000 GPM pump and the B125s had a 1250 GPM pump.
