Thermostat Housing SBC 15 Degree Clearcoat

The Thermostat Housing SBC 15 Degree Clearcoat (BTH-204) is a precision aluminum water neck assembly engineered for small-block Chevy V8 cooling systems. This 15-degree water neck features a 1-1/2-inch ID hose barb connection, allowing seamless integration with standard radiator and heater hose configurations. The clear anodized finish provides corrosion resistance while maintaining visibility of the component's aluminum construction, making it suitable for both street and performance engine builds where cooling system reliability is non-negotiable.

The 15-degree inlet angle is optimized for Chevy V8 head configurations and works with OEM and aftermarket water pump designs. The included O-ring and hardware eliminate the need to source additional sealing components, ensuring a leak-free installation from the outset. Aluminum construction keeps weight minimal while maintaining strength required for pressurized cooling systems operating at standard 16 PSI relief settings. The clear anodized finish resists oxidation and maintains appearance in engine bays exposed to moisture and thermal cycling.

This water neck suits Chevy V8 restorers, street rod builders, and engine swap enthusiasts who demand OEM-quality cooling components with proper fitment angles. Whether installing a period-correct rebuild or integrating a small-block into a modern platform, this thermostat housing delivers reliable coolant routing. The compact 3 x 3 x 6-inch footprint fits tight engine compartments, and the barbed hose connection accommodates both vintage tubing and contemporary silicone hoses without adapters.