Engines may require the changing of manifolds, fuel system components, electronic components, Rocker Covers and/or sumps. All accessories including Turbo/Super charges, Manifolds, Fuel and Cooling systems remain on the Engine for the customers convenience. These items are not covered for warranty. New oil and filters must be installed for warranty to be validated. Radiator should also be cleaned and flushed & timing belt replaced as failure of these components will void the warranty. It is also advised to check interchangeability of all components including electrical items before fitment as the warranty does not cover fault finding or engine failure due to incorrect fitment.