Up for sale is a new, nos, factory original GM Delco Power Brake Booster Check Valve for 1964-74 GM Vehicle's.  The nos part number is 5472143. The check valve is nos, has never been used, and come's as pictured. Correct early check valve with correct coloring!  This would be needed for that Corvette, Chevelle or Camaro restoration project!  Keep that Chevy all original with genuine GM Nos Part's! Thanks and good luck! Shipping quoted is for the USA only! Email with questions or concerns!