NGK Spark Plugs
Over the years, the electrode wears away on spark plugs, causing too large of a gap and weak spark. Additionally, excess carbon can build up and bridge the gap to negatively effect performance. Replace yours with these factory units to regain your power, fuel efficiency, and smooth a poor idle.
The spark plug is essentially the first step in your engine’s combustion process. It forces electricity to arc across a gap, just like a bolt of lightning. The electricity must be powerful in order for it to cross the gap and create a quality spark. As the piston travels up the first time, compressing the air-fuel mixture inside the combustion chamber, the distributor sends an energy surge along the spark plug wire. When the surge reaches the spark plug, it fires, which ignites the air-fuel mixture. This explosion inside the combustion chamber forces the piston down again.
If you are replacing any aspect of your ignition system, it's best to replace all serviceable components. By doing so, your ignition system will work in better harmony, freeing up hidden horsepower and raising fuel economy.
Mitsubishi Evolution stock heat range spark plugs.