i am getting the run around from cummins and thomas i have a c2 with cummins 6.7 i am looking for the orange oring that goes between the outlet of the turbo into the intercooler right off the turbo is a 90 degree aluminum pipe and there is an oring about 2 1/2 diameter i called cummins they said its a bus part which make no sense to be but ok i called thomas they said its a cummmins part has anyone replaved this oring and where did u get and what is the part number????