A/C Solutions BMW E30 R134a Filter Drier (late model) (64538391025)The filter drier is designed to keep the system clean and clear of debris and moisture and should be changed any time the A C system is opened for service. This E30 filter drier is designed to use the late model high pressure switch. Whats included? E30 R134a filter drier Fitment notes: For early model applications, see here. For use with the following models (from 09 89): BMW E30 (all) Cross reference part numbers: 64538391025, 64531394109