Description
ECS C5 fuel system fuel block for 1997 to 2003 Corvettes, same fuel block that comes in all of our early C5 fuel systems. The E85 fuel block is available in a -10AN supply and -8AN return configuration for E85 applications. All C5 fuel hats must be measured to ensure fitment with our C5 fuel blocks, there are two different hole diameter sizes for the C5, either 3.50″ or 3.75″, see picture below for measurement guideline.
