-16an BBC Water Pump Port Adapters

The -16AN BBC Water Pump Port Adapters from Meziere are precision-engineered fittings designed for builders modifying big-block Chevrolet engines with modern cooling system configurations. These adapters are essential for integrating aftermarket water pumps, custom radiators, or upgraded cooling setups with -16 AN hose compatibility on BBC blocks that lack factory provisions or require relocated ports. Proper water line routing is crucial for preventing hose kinking and maintaining system integrity under load.

Constructed from durable aluminum alloy, these adapters feature precision-ported internal passages that ensure reliable flow characteristics. The -16 AN port standard uses a -16 JIC thread, which is compatible with AN hose ends and appropriate adapters, providing a leak-free seal when properly fitted. The design aims to optimize water flow, which is critical for maintaining consistent cooling efficiency across the entire RPM range.

Engine builders, race teams, and hot rod enthusiasts will find these adapters invaluable when tackling custom cooling loops on block-mounted applications. Weighing just 0.55 lbs and featuring compact dimensions, the adapters install cleanly in tight engine bays without compromising underhood layout or requiring extensive block modification. They are a reliable solution for enhancing the performance of big-block Chevrolet engines.