770B - GRADER, MOTOR 1830 HEATING AND AIR CONDITIONING Parts group 1830 HEATING AND AIR CONDITIONING 1830 HEATING AND AIR CONDITIONING . Cab Heater (19,000 BTU) ( - 513954) Cab Heater (20,000 BTU) (513955 - 538882) Cab Heater (20,000 BTU) (538883 - ) Cab Heater (25,000 BTU) With A/C ( - 543489) Cab Heater (25,000 BTU) With A/C (543490 - 548823) Cab Heater (25,000 BTU) With A/C (543490 - 548823) Cab Heater (40,000 BTU) ( - 520410) Cab Heater (40,000 BTU) (520411 - 538882) Cab Heater (40,000 BTU) (538883 - 548823) Cab Heater With Pressurizer (40,000 BTU) (548824 - ) Cab Roof (W/ A/C) ( - 543489) Cab Roof (W/ A/C) (543490 - 548823) Cab Roof (W/ A/C) (548824 - ) Cab Heater Hoses And Controls (40,000 BTU) ( - 520410) Cab Heater Hoses And Controls (40,000 BTU) (520411 - 543489) Cab Heater Hoses And Controls (40,000 BTU) (543490 - 548823) HEATER CONTROL VALVE ( - 548823) Cab Heater Hoses And Controls (40,000 BTU) (548824 - ) Cab Heater, Hoses And Controls (Under Seat) (20,000 BTU) (548824 - ) Air Conditioner Compressor, Clutch And Service Valves ( - 543489) Cab Heater Hoses (19,000 And 20,000 BTU) (With A/C) ( - 543489) Cab Heater Hoses (19,000 And 20,000 BTU) (With A/C) (543490 - ) Compressor Mounting Brackets (R12 Refrigerant) ( - 543489) Compressor Mounting Brackets (R134A Refrigerant) ( - 543489) Compressor Mounting Brackets (R134A Refrigerant) (543490 - ) Air Conditioner Compressor Hardware Kit ( - 543489) Compressor (R12 Refrigerant) ( - 543489) Compressor, Manifold And Dust Cover (R134A Refrigerant) (543490 - ) EVAPORATOR WITH SUCTION AND PRESSURE HOSES ( - 543489) Evaporator With Suction And Pressure Hoses (543490 - 548823) Evaporator Suction And Pressure Hoses (548824 - ) AIR CONDITIONING MODULE WITH HEATER AND EVAPORATOR CORES (548824 - ) Air Conditioning Cover, Louvers And Filters ( - 543489) AIR CONDITIONING COVER AND FILTER (543490 - 548823) AIR CONDITIONING COVER, AND FILTER (548824 - ) Air Conditioning Ducts (543490 - ) CONDENSER AND RECEIVER DRYER HOSES ( - 543489) CONDENSER AND RECEIVER DRYER HOSES (543490 - 548823) CONDENSER AND RECEIVER DRYER HOSES (548824 - ) AIR CONDITIONING SIDE CONTROL PANEL ( - 520410) AIR CONDITIONING SIDE CONTROL PANEL (520411 - 525411) AIR CONDITIONING SIDE CONTROL PANEL (525412 - 548823) Blower Assembly ( - 543489) BLOWER ASSEMBLY (543490 - 548823) BLOWER ASSEMBLY (548824 - ) Air Conditioning Control Panel ( - 543489) Air Conditioning Control Panel (543490 - 548823) HEATER RECIRCULATION DOOR ( - 543489) CONDENSATION TRAY AND DRAIN HOSE ( - 543489) REPLACEMENT CONDENSATION TRAY AND DRAIN HOSE ( - 543489) CONDENSATION TRAY AND DRAIN HOSE (543490 - 543490) FILTER PANEL AND FILTER ( - 548823) FILTER PANEL AND FILTER (548824 - ) Air Conditioning Compressor ( - 543489) Compressor, Manifold And Dust Cover (R134A Refrigerant) (543490 - ) Compressor Shaft Seal Kit (543490 - ) Compressor Hardware Kit (543490 - ) Cab Isolators (With Air Conditioning)