Caterpillar Include 4W5738/6N8940 Main Bearing Set PAI 370230CROSS REFERENCE: PAI 370230 APPLICATION: Caterpillar 3306 3300 Multiple Use Application. DETAILS: OEM Number Description Quantity 4W5738 MAIN BEARING 7 6N8940 THRUST WASHER 2 BRAND: PAI 370230 Caterpillar Include 4W5738 6N8940 Main Bearing Set PAI 370230. Repair parts and truck parts. Supports crank stability and maintains consistent bearing performance. All components are proudly manufactured in the U. S. A. by PAI Industries Inc., an ISO9001