The fuel cell adapter plate allows the use of the 12 bolt flange EFI (Electronic Fuel Injected) fuel pump modules in the large 24 bolt flange fuel cells. The .250" thick aluminum flange has been precision cut to fit the fuel cell and the 12 bolt fuel module. The kit includes 2 gaskets to the existing fuel cell. The adapter plate is anodized in bright dip black and includes a -8 AN rollover valve