The Cummins 5.9-liter diesel engine has powered Ram trucks since 1989. It went through a few changes over its lifespan, but ...

The most notable problem with the Cummins engine is what's become known as the "Killer Dowel Pin," where the timing cover alignment peg works itself loose from the cylinder head and wreaks havoc ...

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 ...