Seat-Skoda-VW-03-PXE13-PV6

The PX Series is SANDEN's next generation swash plate compressor. They are durable at higher speeds, have lower noise vibration harshness (NVH), and are variably controlled for maximum environmental benefit.
http://www.compressor-express.com/ac-compressor/vw/Seat-Skoda-VW-03-PXE13-PV6

Some Volkswagen Polo  are built with the same air conditioning compressor. The Original Equipment Manufacturer Numbers (OEM numbers) are Volkswagen 6Q0820803H, 6Q0820803R.

The air-conditioning system of these vehicles was assembled with a Sanden PXE13 compressor. Manufacturer numbers: Sanden 8740, 8741.
These ac units seem to be interchangeable.

Audi-Seat-Skoda-VW-02-7V16-PV6

SANDEN developed a scroll-type compressor for the first time in the world in 1981.

http://www.compressor-express.com/ac-compressor/vw/Audi-Seat-Skoda-VW-02-7V16-PV6

Some Volkswagen Bora, Volkswagen Golf IV, Volkswagen Jetta USA, Volkswagen New Beetle and Volkswagen Polo Classic are built with the same air conditioning compressor. The Original Equipment Manufacturer Numbers (OEM numbers) are Volkswagen 1J0820803A, 1J0820805.

The air-conditioning system of these vehicles was assembled with a Sanden 7V16 compressor. Manufacturer numbers: Sanden 1206, 1221.

These ac units seem to be interchangeable.

Audi-VW-02-DCW17-PV4

ZEXEL air-conditioning business was bought by Valeo who then refocused manufacturing to support the European market.

http://www.compressor-express.com/ac-compressor/vw/Audi-VW-02-DCW17-PV4

Some Volkswagen Passat are built with the same air conditioning compressor. The Original Equipment Manufacturer Numbers (OEM numbers) are Volkswagen 8D0260805D, Volkswagen 8D0260805M.

The air-conditioning system of these vehicles was assembled with a Zexel DCW17 compressor, compressor manufacturer numbers: Zexel 506031-0901. These ac compressors seems to be interchangeable.