Cummins ISB/QSB 3974539 Crankshaft Assembly PAI 171999CROSS REFERENCE: 3974539 5289840 APPLICATION: ISD 4. 5 ISB4 ISB QSB BRAND: PAI 171999 Cummins 3974539 Crankshaft PAI 171999 intended for diesel performance and OEM replacement. Ensures stable torque delivery and long lasting crankshaft reliability. 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
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Cummins ISB/QSB 3974539 Crankshaft Assembly PAI 171999