Spark Plug is an important element without which you cannot start your vehicle. It must be cleaned regularly to remove the carbon residing on it due to regular use. After a considerable period of time, the cleaning no longer works and you have to change the spark plug.
Changing a spark plug is not very difficult. You can do it yourself. The cost of a genuine spark plug is not high too. But to find the right spark plug, that is, finding the one, which lasts for longer time without having you to remove and clean it every time is a tough task.
To ease the purpose, you can always log on to the internet and locate the websites of dealers who sell car spares. You can compare the specification of the spark plug as well as the rates with the ones given in your manual. In case you are confused, you can give a call to the dealer from where you purchased the car.