Cummins X15 3688488 EGR Front Exhaust Manifold PAI 181081CROSS REFERENCE: 3688488 APPLICATION: Cummins X15 Multiple Use Application. BRAND: PAI 181081 Cummins X15 3688488 EGR Front Exhaust Manifold PAI 181081. Heavy truck parts and OEM replacement parts. Maintains exhaust pressure balance. 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