Replacement tanks are undated. Original 1961-1964 Corvettes expansion tanks came with pressed-in tubes. The tubes became an issue as wrestling with heater hose connections would often break loose the connection and cause the tank to leak. GM fixed this problem with their later design and service tanks. Zip's replacement expansion tanks feature welded tubes to eliminate leakage problems and provide a worry-free installation. Made in USA.
Just like the originalReview by Bill Reviewed on 2/25/2018
Just like the original, well almost, my Vette's original expansion tank was long gone when I got the car. But, the new tank fits and looks good.