Cummins ISX/X15 3680522 Camshaft Gear PAI 191848CROSS REFERENCE: 3680522 APPLICATION: Cummins ISX X15 Multiple Use Application. BRAND: PAI 191848 Cummins ISX X15 3680522 Camshaft Gear PAI 191848. USA truck parts and replacement truck parts. Maintains timing accuracy and supports consistent engine synchronization. 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