GFB AN-4 adapter for blow-off valve

GFB BOV vacuum adapter with external AN-4 fitting

Converts the standard brass hose fitting on selected GFB BOVs to an AN-4 fitting.

Suitable for connecting a braided vacuum hose to a GFB blow-off valve. Made from stainless steel and supplied with a Viton sealing ring for sealing against the GFB blow-off valve.

Fits all GFB Mach 2, Hybrid, Respons and Deceptor Pro II valves where the existing brass hose fitting has an internal hexagonal socket in the opening. Early versions of these products have a round opening and a different thread, so they are not compatible with this adapter.