Thermostat Housing SBC -16AN Straight

The Thermostat Housing SBC -16AN Straight by March Performance is a precision water neck assembly engineered for small-block Chevy V8 engine builds that demand reliable coolant flow management and modern AN-threaded plumbing standards. This component serves as the critical junction point where the thermostat housing connects to high-performance cooling systems, allowing builders and enthusiasts to integrate quality cooling infrastructure with custom hose routing and fitting compatibility.

Constructed from lightweight aluminum and finished in black anodized coating, this thermostat housing features a straight-port 16 AN male connection that eliminates unnecessary bends and reduces flow turbulence within the cooling circuit. The black anodized aluminum finish provides both corrosion resistance and a professional appearance in engine bay applications. Supplied with all required O-ring seals and mounting hardware, this ready-to-install assembly ensures proper coolant circulation without leaks while accommodating aftermarket radiators, high-flow water pumps, and custom cooling configurations common in performance engine builds.

Street rods, restomod projects, and modern swap builds benefit most from this thermostat housing when upgrading or customizing cooling system layouts on small-block Chevrolet platforms. The straight 16 AN fitting integrates seamlessly with contemporary stainless steel braided hose assemblies and aluminum manifolds used in contemporary engine compartment designs. Installation requires standard hand tools and basic mechanical knowledge, making this component ideal for DIY enthusiasts and professional builders seeking OEM-quality cooling components with modern AN-threaded standardization.