1989 GMC military bus diesel thomas.
With the nice weather weíve been having in Pennsylvania I decided to spend some time outside and underneath my bus. Iím a little concerned with what I saw.
I need some help identifying component. I think itís diesel fuel related, but Iím not sure. I hope this is the right place to post an unknown part.
I threw in a bonus picture of a component associated with the coolant. Again, a part I canít identify.
Any help is appreciated!