Original part number 928 126 113 00 - 90 to 92 & 928 126 113 01 - 93 to 95. NipponDenso - now Denso - is the original manufacturer of the 928 AC Compressor. Fitted from 1990 to 1992 to all 928 Cars Worldwide. Original Cars were R12. 1993 to 1995 Cars were R134a Denso 471-1123 is the manufactures part number. These are re-manufactured units, which apart from the casing, are brand new. No Core required. #1 on the PET Drawing The compressor comes filled with Mineral Oil which is compatible with R12. If you have converted your AC system to R134a, drain the compressor into a can to record the quantity used. Replace with Ester Oil as it is compatible with Mineral Oil and R134a.
