Dodge 6.7L Cummins CCV (Crank Case Vent) Gasket
All ‘07.5-18 6.7 liter engines have a crankcase vent filter that is located on top of the valve cover assembly and under the dress cover. It is a good idea to change the gasket at the same time.
The factory suggested change interval for the CCV is 67,500 miles or when the overhead message appears. Due to the fact that the CCV breather tube is routed to the turbo inlet we recommend shorter change intervals to help minimize oil vapor coating of the turbo compressor wheel.
Per Dodge, a message on your overhead console will alert you when the Crankcase Vent filter becomes clogged.
Refer to #4 in diagram.