Cummins ISB 5.9 / QSB 5.9 Gasket Set – Upper Engine Part: 4090035

We at Big Bear Engine Company come from a background of nose to the grindstone machine shop work. We value your time and know you need to get back to work quickly.This particular part number: 4090035 from Interstate McBee is of the highest quality and will always ship in a timely fashion.