1The housing has three port in the body, one for fan switch, a 1/8 NPT port for gauges etc., and another NPT port for our optional recirculation fitting. 2This enables you to utilize whatever size fitting you need for custom installation. If you want to use braided hose with AN fittings, this housing will bolt on easily and with the right adapter threaded in, you'll complete all. 3The swivel neck comes pre-assembled with a high quality Stant thermostat (180 F) held in place with a "C" clip. 4You could completely remove the oem housing from the block and delete the heater core hoses by adding one more hole to the flange, so that thermostat housing is bolted directly to the oem aluminum water pump housing, which is perfect for race car applica 5Manufactured from superior aluminum alloy material with good rust and wear resistance, long service life, fit for K Series K20 K24 Engines.Features:The housing has three port in the body, one for fan switch, a 1/8 NPT port for gauges etc., and another NPT port for our optional recirculation fitting.This enables you to utilize whatever size fitting you need for custom installation. If you want to use braided hose with AN fittings, this housing will bolt on easily and with the right adapter threaded in, you'llcomplete all.The swivel neck comes pre-assembled with a high quality Stant thermostat (180 F) held in place with a "C" clip.You could completely remove the oem housing from the block and delete the heater core hoses by adding one more hole to the flange, so that thermostat housing is bolted directly to the oem aluminum water pump housing, which is perfect for race car applications.Manufactured from superior aluminum alloy material with good rust and wear resistance, long service life, fit for K Series K20 K24 Engines.Specification:Condition: Material: Aluminum alloyColor: SilverFitment:Universally fit for K-series enginesFit for K20 K24 enginesPackage List:1 * Swivel Neck Thermostat Housing1 * Pipe Cap3 * Screws