One of the most reliable heavy-duty engine manufacturers of all time, Cummins, was founded in 1919. Over the decades, it has built its reputation and become a cornerstone of American diesel power, ...

The Cummins B Series engine reshaped what drivers expected from diesel engines. The B Series engines, consisting of the 6B, 6BT, 6BTA (inline six-cylinder), 4B, 4BT, and 4BTA (inline four-cylinder), ...