Thermostat Housings

Upgrade your cooling system with CVF Racing Ford 300 Inline Six Thermostat Housings, designed for the legendary Ford 300 (4.9L) straight-six engine. Also known as the Ford 300 Six, Ford Big Six, and Ford 4.9L Inline 6, this durable engine powered generations of Ford F-Series trucks and other classic Ford vehicles. These thermostat housings, also called water necks or thermostat necks, connect the upper radiator hose to the engine's cooling system while securing the thermostat in place. Whether you're restoring a classic Ford truck or building a custom Ford 300 Six, CVF Racing thermostat housings provide a clean, finished appearance for your engine.