Billet Water Necks

Our Billet Water Filler Necks are machined with either a -12AN or -16AN female straight o-ring port in the front.  This allows for use of the size fitting of choice for your application.  Fittings are sold separately for this reason. -08, -10, -12 AN fittings are available or fittings to fit your 1.25, 1.50 and 1.75 radiator hoses.

Available in a straight, angled or coupled design with either a Raw, Polished or Satin Black Powder Coated finish.  The housing and base plate have been tumble polished first and then professionally polished to a mirror finish or powder coated with a durable Satin Black Powder Coating.

Our Billet one-piece designed top expansion portion is unique to the industry and bolts to the base plate with an o-ring seal by 4 stainless steel cap screws.  1/4" push lock overflow fitting and mounting bolts are also provided.

Racers ourselves, We spent a tremendous amount of time making sure of the fit for the radiator cap, insuring the pressure seal and locking mechanism work as well as possible for extreme racing conditions.

Made in U.S.A