Moroso 63476 Moroso Chevrolet Big Block/Small Block Water Outlet Filler Neck -20An w/O-Ring & Two 3/8in NPT Ports

Billet Aluminum, Chevy -20AN Male Fitting and 3/8 Inch NPT Ports, Clear Anodized finish, O-ring

Fits: Small Block, Big Block, and 90° V6 Chevy Intake Manifolds

• Features two 3/8" N.P.T. female ports to plumb water to cylinder head for cooling
• Includes stainless steel mounting hardware