Caterpillar 1W4405 Crankshaft Gear PAI 371627CROSS REFERENCE: 1W4405 2794982 279 4982 APPLICATION: Caterpillar 3306 Multiple Use Application. BRAND: PAI 371627 Caterpillar 1W4405 Crankshaft Gear PAI 371627. USA truck parts and replacement truck parts. Supports crank gear stability and maintains consistent engine 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