The orifice tube is a tube with a given length and cross-section which expands the refrigerant but, unlike the expansion valve, it is unable to regulate flow rate and superheating.

The receiver-drier is one of the key components of the AC loop. Its function is to receive and store liquid refrigerant from the condenser. At the same time, it traps water and retains impurities and particles.

The Radiator Fan assembly consists of a motor and fan assembled in a shroud located at the front of the condenser/radiator. It provides cooling to the operating high-pressure high-temperature condenser and radiator to prevent them from overheating.

The desiccant, essentially the same material that you see in food bags and shoe boxes, is used to absorb moisture that may have gotten inside the AC system during manufacture, assembly or service.