-16an Male Water Neck w/O-Ring - Black

The MEZIERE -16AN Male Water Neck with O-Ring in black anodized aluminum is a straight-flow cooling system component engineered for high-performance Chevy V8 engine builds. This water neck assembly features a 16 AN male connection designed to integrate with aftermarket radiator hose systems, offering a direct-fit solution for custom cooling configurations where OEM water outlets require replacement or upgrading.

The 16 AN male fitting (equivalent to -16 Teflon hose) accommodates large-diameter cooling lines typical of race and high-flow applications, minimizing restriction in coolant circulation. The integrated O-ring seal eliminates the need for separate gasket materials, streamlining assembly and reducing leak points—a critical factor in closed-loop cooling systems operating under elevated temperatures and pressure. Black anodized aluminum construction resists corrosion while maintaining the lightweight profile essential to performance engine builds. At 0.35 lbs and compact dimensions, this water neck integrates cleanly into tight engine bay layouts without requiring extensive custom fabrication.

This component is purpose-built for street and track V8 platforms where cooling system modularity and upgrade capability matter. Users rebuilding carbureted or fuel-injected small-block and big-block Chevy engines frequently encounter factory thermostat housings that limit hose routing options or lack the capacity for upgraded cooling lines. The MEZIERE straight water neck solves this constraint, allowing builders to specify cooling system flow paths independent of original engine design. It pairs with corresponding radiator adapters and AN-compatible hose assemblies to create fully custom cooling layouts that improve coolant velocity, reduce hot spots, and support sustained high-output operation.

MEZIERE has established itself as a manufacturer of precision cooling system components for serious engine builders and race teams. This water neck reflects that focus on OEM-quality fitment and materials in a component that appears simple but must withstand repeated thermal cycling, pressure spikes, and aggressive coolant flow without weeping or failure.