The Precision Works Universal Inline Thermostat Housing is the perfect solution for adding a thermostat to your engine's cooling system, whether you're running a Honda K-Series with an electric water pump or a Chevy/American Muscle car with a Meziere pump. What makes this housing unique is its versatile design featuring a threaded ORB port, allowing you to use the included 1.25" or AN16 fittings—or swap in other sizes to fit virtually any cooling setup. Designed for maximum compatibility and flexibility, this inline thermostat housing requires a Stant Part #13958 (180-degree thermostat) and Stant Part #25270 (thermostat seal) for proper operation.