How are Water Necks Made?
Water necks are often made from plastic, aluminum, or steel. Early versions of the part were little more than a steel pipe gas welded to a piece of steel plate, with a paper gasket to create a seal.
Modern water necks are often machined from solid pieces of aluminum. Grooves are sometimes cut into the water neck’s mating surface, allowing for the use of o-rings instead of paper gaskets. Welds on many aftermarket and factory water necks are performed by robotic welding machinery instead of humans. Robotic welding processes ensure the finished product looks virtually seamless, as though machined from billet.