Billet Aluminum Thermostat HousingUniversal Remote ApplicationsTwo -12AN Female O-Ring Inlet Ports on BottomAnodized Black Thermostat or restrictor is placed between this housing and a conventional manifold housing such as part No 710-63423, where a radiator hose connects it to the radiator can be used with Moroso cooling system accessories, Part Nos 710-63420, 710-63421, 710-63423, 710-63430, 710-63431, 710-63432, 710-63460, 710-63461, 710-63465, 710-63466 and 710-63471