Ash pan?...what are you talking about?...I am a Cummins Diesel Certified and I never heard of an "ash pan" ever as a part of a Diesel set up. Than again it could be some sort of a VW emissions set up, which does not apply to everyone in Diesel business!
Diesel Particulate Filter..
We call them ash pans..because thats what they really are in a way.
And dont come and tell me Cummins hasnt got them now.