In 1989, sales of Dodge trucks were falling so in a final attempt to save their truck business, Dodge made a model that featured a huge Cummins turbodiesel engine. These straight-six engines were much more advanced than GM or Ford diesel trucks so the engineers at Dodge had to make the body and suspension a lot sturdier. As a result, over the years the Cummins brand has become known for producing heavy-duty, dependable and high performing diesel engines. In fact, Cummins leads the world in the manufacturing of clean, reliable and highly efficient diesel truck engines. ProSource Diesel has everything you need to maintain and improve that performance year-after-year, mile-after-mile.