I can find only limited information on that compressor. It is not a compressor that has a history of being installed on our cars.
The arrow in the photo points towards what I assume is the oil fill location and it’s sealing plug. On a Sanden compressor the sealing plug is opposite the oil sump of the Compressor.
if that is correct for this compressor then that plug must be oriented horizontally or upright. If it is oriented in a downward position it is incorrectly mounted
as currently mounted, where is this plug oriented on your car????
Larry