The ZEXEL name itself was compiled of the "Z" from zenith, because the company reached the zenith of its performance under its old name of Diesel-Kiki, and the word "excel" because the company wanted to excel at customer satisfaction.
http://www.compressor-express.com/ac-compressor/saab/Saab-07-DCS17IC-PV6
Some Saab 9-5 are built with the same air conditioning compressor. The
Original Equipment Manufacturer Numbers (OEM numbers) are Saab 12756725.
The air-conditioning system of these
vehicles was assembled with a Zexel DCS-17IC / Valeo KC-88
compressor. Manufacturer numbers: Zexel 506041-0380, 506041-0382.
These ac units
seem to be interchangeable.