A CNG conversion kit is mainly a set of components and tools installed in a vehicle so it can operate using both gasoline and CNG.
CNG conversion kits usually come with parts such as regulator, high pressure tubing and fittings, pressure gauge, filling nozzle, hoses, hose clamps, closed loop fitting system, emulator, timing advance processor, fuel change over switch as well as the necessary wiring, straps and screws.
The fuel change over switch allows the driver to switch from gasoline to CNG in just a flick of a button. CNG cylinder and cylinder valve is not part of the CNG conversion kits.

CNG conversion kits has several advantages for people who are contemplating on making the switch from purely gasoline-run vehicle to a CNG/gasoline bi-fuel system, knowing these advantages can help you make the right decision that is best for you.

Oil free - Natural Gas is Produced in the USA

Save - Costs up to 80% Less than Gasoline

Clean - Fewer Emissions Save the Environment

Safe - CNG Kits and Cylinders Built to ISO or DOT Safety Standards

Easy - Filling Your Car is Nearly as Fast and Easy

Convenient - Bi-Fuel System - Change to Gasoline with the Flip of a Switch Even While Driving

Works with any - Make, Model, Year, Engine, Carburettor or Fuel Injected, Gasoline or Diesel