One upgrade can get your 6.7 Cummins engine running cleaner and making more power. This must-have Ram upgrade is also on sale right now.

Your gasaholic friends may not believe you, but feel free to tell them that diesels will soon be cleaner than current gasoline engines. It's not a trick-they'll have to be that clean if manufacturers ...

Sponsored Content. We may receive a commission on purchases made from links. The 6.7-liter Cummins turbodiesel inline-6 is one of the most widely used diesel engines out there. It has been fitted to ...