Cummins ISX 4955596 Upper Gasket Set EGR PAI 131638ECROSS REFERENCE: 4955596 4089169 4352145 APPLICATION: Cummins ISX BRAND: PAI 131638E Cummins 4955596 Upper Gasket Set EGR PAI 131638E featuring engine replacement and replacement engine parts. Ensures stable sealing with dependable long service. All components are proudly manufactured in the U. S. A. by PAI Industries Inc., an ISO9001 certified company with over 50 years of experience in the heavy duty truck parts industry. This part is built brand