Looking to adapt -16AN Hoses/Fittings to your coolant housing? This is it! This housing is developed to alter the OEM thermostat housing to use after market hoses and fittings with an ease. This TSM Thermostat housing fits any B-Series engine and has the capability to use a OEM cooling fan switch that you can buy by clicking here. Don't think twice and replace the factory thermostat housing with a TSM one today!