Cummins’ venerable 5.9-liter diesel engine has undergone many revisions. Here are some highlights of each one. What is a ...

It is easier to hit emissions standards with gas engines. With diesel prices remaining 50c per gallon or more above the price ...

For years, Cummins fans have wondered what a gasoline version of the legendary 6BT would look like. The original 5.9-liter I6 ...

Cummins engines were dominant in agriculture long before their debut in heavy-duty trucks. The 12-valve 5.9-liter Cummins I-6 engine was developed and installed in Dodge pickups starting in 1989 ...