DELPHI's High Efficiency SPh Compressors are 10-cylinder fixed displacement units consisting of five double-ended pistons moving in the cylinder bore by a swash plate and shaft assembly.
http://www.compressor-express.com/ac-compressor/opel/Opel-55-CVC-PV6-REMAN
Some Opel Astra H/ Classic III are built with the same air conditioning compressor. The
Original Equipment Manufacturer Numbers (OEM numbers) are Opel 24466997, 6854067.
The air-conditioning system of these
vehicles was assembled with a Delphi-Harrison CVC
compressor.
These ac units
seem to be interchangeable.