Caterpillar C13 3133997 Crankshaft Assembly PAI 370043CROSS REFERENCE: 3133997 10R2110 313 3997 APPLICATION: Caterpillar C13 BRAND: PAI 370043 Caterpillar 3133997 Crankshaft PAI 370043 ensures durable rotation. Replacement engine parts designed for truck engine parts to maintain performance. 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