6.7L Cummins Exhaust System – Aftertreatment Inlet and Outlet – General Information

Due to the number of various exhaust aftertreatment applications, this procedure has been written to be
generic. Illustrations within this procedure will not represent all applications.
The aftertreatment system is composed of four sections.
These sections are:
โ€ข Inlet
โ€ข Aftertreatment diesel oxidation catalyst
โ€ข Aftertreatment diesel particulate filter
โ€ข Outlet
NOTE: In some applications, the aftertreatment diesel oxidation catalyst can be integrated into the inlet of the
exhaust aftertreatment system.