For BMW Z4 2.0L 2012-2016. For BMW X4 2.0L 2015-2015. For BMW X3 2.0L 2013-2015. For BMW X1 2.0L 2012-2015. Step 3: Removal of the Old Compressor: Disconnect the electrical conors from the compressor and remove the mounting bolts and refrigerant line connections.