BMW 64506950789 Air Conditioning Compressor

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To replace the A/C Evaporator Core in a 3 series, discharge the AC refrigerant by a BMW expert. In the engine compartment, detach the air filter, heater core, and instrument panel. Then, undo the AC lines, temperature sensor, and wiring connectors. For Z4 models, remove the heater assembly, evaporator cover, and expansion valve. Then, replace the expansion valve and A/C Accumulator. For the compressor, remove the engine splash shield, drive belt, and compressor. For installation, mount a new compressor with the proper oil and seals.