I'm looking for the A/C compressor belt tensioner for an M52. BMW calls it the "base plate with drop arm" and the part number is 11281433632. I can get everything I need to add A/C to my car except for this part. I see some sites mention a conversion to a hydraulic tensioner, but they appear to be for the M52/TU. My M52 is not a TU. Any ideas or suggestions welcome.
