Mack 4379-RD106151 Heater Core PAI 804061OEMCROSS REFERENCE: 4379 RD106150 4379 RD106151 APPLICATION: Mack R RB RD DM Multiple Use Application DETAILS: Genuine Part BRAND: PAI 804061OEM Mack 4379 RD106151 Heater Core PAI 804061OEM. Heavy duty truck parts and diesel truck parts. Supports consistent heat transfer and ensures stable interior comfort. 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