Cummins ISB/QSB 3943449 Valve Insert Intake PAI 192185 (Pack6)CROSS REFERENCE: 3943449 APPLICATION: Cummins ISB QSB BRAND: PAI 192185 Cummins 3943449 Valve Insert Intake PAI 192185 supported by truck engine parts and heavy duty engine parts. Provides precise intake sealing and dependable 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 new with