Cummins ISX 3680542 Crankshaft Timing Gear PAI 172032CROSS REFERENCE: 3680542 APPLICATION: Cummins ISX BRAND: PAI 172032 Cummins 3680542 Crankshaft Timing Gear PAI 172032 truck engine parts and commercial truck parts. Ensures precise gear timing and maintains stable crankshaft function. 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