Ford compressor hose adapter. This adapter will allow you to use a Ford FS-10 A/C compressor with an aftermarket A/C system or aftermarket hose kit. The adapter is designed to use a # 8 13/32″ A/C fitting and a # 10 1/2″ A/C  fitting. The thread sizes are 3/4″-16 and 7/8″-14, and both fittings use O-ring connection at the hoses.
The male fittings point straight out the back of the Compressor.