Billet Water Neck 16AN Black

The Billet Water Neck 16AN Black from ALLSTAR PERFORMANCE is a precision-engineered coolant distribution component designed for custom cooling system builds in high-performance and modified vehicles. This adapter serves as the critical connection point between your engine block and radiator hose routing, allowing builders to customize coolant flow paths and optimize thermal management in tight engine bays or non-standard configurations.

Constructed from solid aluminum billet stock and finished in durable black anodize, this 16AN water neck provides superior durability and corrosion resistance compared to cast iron originals. The 16AN port designation indicates compatibility with -16 AN hose fittings, a standard in modern racing and performance cooling applications that ensures leak-free connections under high-pressure conditions. The compact yet robust design integrates seamlessly into various engine configurations while the precision-machined passages optimize coolant velocity and reduce turbulence, enhancing heat transfer efficiency and engine stability during sustained high-load operation.

This water neck is ideal for street rod builders, engine swap specialists, and race engine builders who demand reliability and aesthetic appeal. Whether you're running a classic street rod, a turbocharged engine swap, or a competition platform, a quality billet water neck eliminates restrictive factory designs and enables professional-grade cooling system layouts.