A CCV filter, or crankcase ventilation filter, isn't unique to the 6.7-liter Cummins engine, but it's also a common feature on the Duramax diesel ... released into the air. In 2007, the EPA ...
the LML version of the 6.6-liter Duramax, which ran from 2011 through 2016, is definitely one to bypass. Read more: 15 Popular Oil Filter Brands, Ranked Common Rail diesel fuel systems began ...