Pivoting water neck is die-cast, polished aluminum. The o-ring sealed water neck rises at a 45Â° angle and can be rotated for best possible radiator hose access.
Fits all Chevy V8's 1955-86 accepts normal GM thermostats and 1-1⁄2" I.D. hoses. Includes hardware. Bolt hole dimension is approximately 3-1/2".