Most of us are old enough to remember the '80s. Those of us who aren't still remember the '80s diesel cars going 40 in the fast lane, belching smoke, and clattering like mad in the 90s and beyond.

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, ...