Cummins 4B/6B 3925175 Exhaust Valve PAI 192167 (Pack2)CROSS REFERENCE: 3925175 APPLICATION: Cummins 4B 6B Multiple Use Application. BRAND: PAI 192167 Cummins 4B 6B 3925175 Exhaust Valve PAI 192167. Heavy duty parts and heavy duty truck parts. Supports exhaust control and stable engine operation. 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