The A/C evaporator works similar to a radiator as it allows air from the blower fan to pass through it. When the air passes through, the refrigerant inside cools the passing air. The now cold air is then channeled through the A/C vents, cooling you down during a hot summer. At the same time it allows the liquid refrigerant inside the system evaporate back into a gaseous state.
64-11-8-372-772-M6
A/C Evaporator (includes expansion valve), BMW E46 323i Sedan/Wagon (through 8/98), 328i (through 8/98), Each Brand: Behr [Photo]
Final Stage Unit, BMW E46 3 Series, All (1999-05), Each Brand: Behr [Photo]
$57.50
A/C O-Rings
64-50-8-374-959-M325
A/C O-Ring (9.5 x 2.5 mm), E46 323i, 328i, Each Brand: Santech [Photo]
$0.25
A/C O-Ring Kit
This seal kit contains 55 O-Rings of 11 different sizes, 5 valve cores, 5 each of Back, Red and Blue Caps, and 4 Manifold O-Rings. This kit contains all the seals you will need for your E46 3 Series BMW. Over time, these seals can dry up and wear out. The solution is to replace them with new units. NOTE: These new seals are intended for use with R-134a Refrigerant only.
09-9808-200-M325
A/C O-Ring Kit, BMW E46 3 Series, All (1999-05), Each Brand: Santech [Photo]
$36.75
A/C Safety Pressure Switches
Along with the Receiver Dryer, it is recommended that you replace the Safety Pressure Switch anytime you open up the A/C system. This switch is used to disable the operation of the A/C compressor when there is too much or too little refrigerant in the system, preventing possible damage to the A/C compressor.
64-53-6-909-257-M58
A/C Safety Pressure Switch, BMW E46 3 Series, All (1999-05), Each Brand: OEM [Photo]
