Cummins 6B 3917700 Exhaust Manifold PAI 181077CROSS REFERENCE: 3917700 APPLICATION: Cummins 6B Multiple Use Application. DETAILS: High Boss Exahaust Manifold BRAND: PAI 181077 Cummins 6B 3917700 Exhaust Manifold PAI 181077. Replacement truck parts and aftermarket truck parts. Directs exhaust gases and supports engine function. 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