Industrial HVAC Main Unit Front, part number 4130-01-537-4995, is the front module of the Humvee’s heating, ventilation, and air conditioning system. It is specified for HMMWV models M1151, M1152, and M1165, making it a direct replacement for the climate-control front unit in those variants. This unit is identified by NSN 4130-01-537-4995 and corresponds to the front main HVAC assembly used in military applications.
