670C - GRADER, MOTOR 1830 Heating and Air Conditioning Parts group 1830 Heating and Air Conditioning 1830 Heating and Air Conditioning . CAB HEATER (20,000 BTU) (USE TWO FOR 40,000 BTU APPLICATIONS) CAB HEATER WITH PRESSURIZER (40,000 BTU) CAB ROOF CAB HEATER HOSES AND CONTROLS (40,000 BTU) CAB HEATER (UNDER NON AIR-SUSPENSION SEAT) (20,000 BTU HEATER) CAB HEATER (UNDER AIR-SUSPENSION SEAT) (20,000 BTU HEATER) Air Conditioner Compressor And Idler Pulley COMPRESSOR, MANIFOLD AND DUST COVER (R134A REFRIGERANT) COMPRESSOR SHAFT SEAL KIT COMPRESSOR HARDWARE KIT EVAPORATOR SUCTION AND PRESSURE HOSES AIR CONDITIONING MODULE WITH HEATER AND EVAPORATOR CORES (CAB ROOF) CONDENSER, RECEIVER/DRYER AND HOSES (SN -586320) CONDENSER, RECEIVER/DRYER AND HOSES (SN 586321- ) HVAC COVER AND FILTER HVAC DUCTS BLOWER ASSEMBLY FILTER PANEL AND FILTER FRONT WINDOW DEFOG DUCTS (FULL HEIGHT CAB) FRONT WINDOW DEFOG DUCTS (LOW PROFILE CAB)