On February 21, 1941, when Mr. Guido Buscaroli decided with some of his closest friends to found DISA, the Second World War had already broken out. In fact, after just several months of operation, all plants and machinery had to be moved outside of Milan, to the small town of Magenta, due to the Allied bombers’ dangerous raids.

DISA’s primary production of O.E.M. diesel fuel injection systems continued and grew during the post-war period, even though facing the growing competition of the newly integrated E.E.C. countries. It was in those years that DISA decided to diversify its production toward the replacement parts specifically suitable for U.S. made fuel injection systems (Detroit Diesel, E.M.D., Caterpillar and Cummins).

Furthermore, always seeking more profitable niches left by the huge worldwide manufacturers, DISA planned to enter the sophisticated hydraulic transmissions and distributors for special applications markets.