#20 AN Water Neck Fitting - Blue

The #20 AN Water Neck Fitting in Blue from Meziere is an essential cooling system component for serious automotive enthusiasts building custom water circulation setups. Designed for high-performance cooling systems, radiator conversions, and engine swaps, this fitting serves as a critical connection point between your engine block and radiator hose assemblies. Whether you're upgrading a classic car's cooling capacity or integrating aftermarket radiators into a modern platform, this water neck fitting provides the reliable interface your system demands.

Constructed with precision engineering, the #20 AN water neck fitting accommodates -20 AN hose connections, which deliver superior flow rates and pressure handling compared to standard factory heater hose configurations. The blue anodized aluminum finish provides corrosion resistance while allowing quick visual identification of coolant line routing—critical when managing complex engine bay layouts. This fitting's compact footprint (4.7 x 2.15 x 5.4 inches) minimizes clearance issues during installation, making it ideal for tight engine bay conversions where space optimization is essential. The robust construction ensures reliable performance under sustained high-temperature and high-pressure conditions typical of forced-induction and naturally aspirated performance builds.

This water neck fitting benefits street performance builders, vintage car restoration specialists, and motorsport enthusiasts standardizing their cooling systems on -20 AN plumbing. It pairs seamlessly with Meziere radiators, cold water bypass systems, and custom cooling manifolds commonly used in engine swaps and supercharger installations. Installation requires basic mechanical skill—simply connect your -20 AN hose assembly to the threaded port and secure using appropriate fittings. Verify your engine block's water outlet configuration before purchase to ensure compatibility with your specific application.