Moroso 63461 - Filler Neck, Chevy, -16AN

Bolt On Water Outlet Filler Neck 16AN Fitting 2 3/8 in. NPT Female Ports SBC/BBC/90 Deg V6 Chevy Intake Manifolds Blue Anodized Aluminum Fits: Small Block, Big Block, and 90° V6 Chevy Intake Manifolds • Includes two 3/8" NPT female ports to plumb water to cylinder head for additional cooling • For use with steel braided reinforced upper radiator hose