RX8Performance ASTLet's face it, the factory RX 8 Air Separator Tank or AST being made of plastic leaves a bit to be desired. They have become brittle with age which unfortunately often causes the cap to snap off or the tank to split causing leaks. This can empty the RX 8's cooling system very quickly causing overheating and may cause serious engine damage. Our new unit is a direct bolt in replacement for the OE plastic unit and is compatible with completely stock (as
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