Cummins 6B/5.9 3917761 High Boss Exhaust Manifold PAI 181029CROSS REFERENCE: 3917761 APPLICATION: Cummins 6B 5. 9 BRAND: PAI 181029 Cummins 3917761 High Boss Exhaust Manifold PAI 181029 intended for truck engine parts and commercial truck parts. Maintains exhaust routing and reduces stress. 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 new with premium