GM Nippondenso (Denso) 10S17F & 10S20F compressor adapters used to convert a stock compressor to aftermarket hoses. The adapters are standard 8 and 10 suction and discharge fittings. The suction fitting has 7/8″-14 threads and the discharge fitting has standard 3/4″-16 threads. The fittings are made of aluminum in the USA.
The compressor pictured is a standard Chevrolet compressor. Please use it for a reference not a direct application match.