FOR ANY ENGINE UP TO 7000CC. THIS ALLOWS ANY ENGINE DESIGNED TO RUN ON LEADED PETROL TO RUN SAFELY ON ANY UNLEADED PETROL. THE SPITFIRE INLINE STAINLESS STEELE FUEL CATALYST. OUR UNIT UNLIKE ANY OTHER ARE MADE OF 304 STAINLESS STEELE SO THEY WONT RUST EVEN WITH THE WATER IN THE ETHANOL IN MODERN PETROL.
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