The first-gen Cummins engines cost a pretty penny today, and it's because these 5.9-liter diesels were fantastic, along with being so influential to the industry. Just how much torque does a 5.9 ...

Diesel engines are common in pickup trucks, like the Cummins 6.7- and 5.9-liter engines that power some Ram trucks. Ford and Navistar teamed up to bring the venerable 7.3-liter Power Stroke diesel ...

The first Cummins engine to feature on the Dodge trucks was the 5.9-liter ... the 5.9L 12-valve 6BT turbodiesel inline-six from 1989 to 1998 before replacing it with the 5.9L 24-valve version ...