Caterpillar 1282050 Fuel Supply Pump PAI 380161CROSS REFERENCE: 128 2050 1282050 APPLICATION: Caterpillar 3126 Multiple Use Application. BRAND: PAI 380161 Caterpillar 1282050 Fuel Supply Pump PAI 380161. Heavy duty truck parts and diesel truck parts. Supports stable fuel supply and maintains consistent system 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.