-AN 20 ORB to -20 AN Flare
Pro-Tek Radiator Fittings are aluminum fittings designed for racing radiators with a -20 AN threaded inlet, such as the Pro-Tek Extreme Series Threaded Inlet Radiators. These fittings are designed to reduce the likelihood of the top hose blowing off from the higher operating pressure.
Lubricate the O-ring before installation.
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