Intensive cleaning for the catalytic converter, this kit includes two products, one goes in the gasoline tank and the other foam cleaner spray directly on the catalyst from the O2 sensor port. high quality new technology design by the leaders in this industry. we always advise to inspect the catalyst from any cracks, before using the cleaner. ADVANTAGES - Removes existing deposits - Provides protection against heavy dirt with regular use - Provides the engine performance Restores - Ensuring the proper operation of the catalytic converter / turbocharger and the EGR valve - Product properties: For use in all petrol and diesel engines and hybrid vehicles.