Mack 2790-HV212496 Heater Core PAI 0955CROSS REFERENCE: 2790 HV212496 APPLICATION: Mack Multiple Use Application. BRAND: PAI 0955 Mack 2790 HV212496 Heater Core PAI 0955. USA truck parts and replacement truck parts. Maintains consistent cabin heating and stabilizes airflow transfer. 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