RBLT 86-87 Chevy GMC Truck 86-91 Blazer A/C HEATER BOX UNIT AC Air Conditioning

1986-91 Chevy/GMC Square Body K5 Blazer, Jimmy & Suburban. A/C-TYPE HEATER BOX. This is the part that mounts on the firewall, behind the dashboard. ANEW aluminum heater core has been installed. Both vacuum actuators have been cleaned & tested.