Cummins 3943841 Front Exhaust Manifold PAI 181042CROSS REFERENCE: 3943841 APPLICATION: Cummins 6C ISC ISL QSC BRAND: PAI 181042 Cummins 3943841 Front Exhaust Manifold PAI 181042 intended for truck components and heavy duty engine parts. Provides stable exhaust flow. Prevents leaks. Maintains consistent performance. 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