This item is a DSM Performance Products Pro-Touring 360 Degree Rotating Water Neck Kit
Black Anodised Aluminum, Manufactured from 6061-T6
Heat Treat Billet Aluminium, True Billet item in a high quality Black
The o-ring sealed water neck rises at a 15° degree angle which can be rotated for best possible radiator hose location.
Measures 3-3/8" tall at the highest point. The bolt holes are 3-1/4" center to center.
Fits all Chevy V8's 1955-86, accepts normal GM thermostats and 1-1/2" I.D. hoses.
They come with Bolts and O-ring seal for enhanced sealing.