Owing to the depletion of the natural resources, nowadays gasoline has become costlier and its extensive usage makes them exhaust in upcoming years. Due to environment consideration and to minimize the carbon foot prints. For that Hydrogen is considered as an alternative fuel for the automobile. Some design modification and setup is required for using the hydrogen as a fuel in existing four stroke gasoline engines instead of gasoline. In this whitepaper, we have proposed a setup for implementing the Hydrogen gas instead of gasoline in existing petrol engines.Converting gasoline engine to run on hydrogen gas using the setup that is easily fit in the existing vehicles,so users can adopt gradually without huge initial cost of buying electrical or hydrogen fuel cell vehicles.