A vehicle literally needs electricity before it could run. Along with this is the need of spark plugs to start the engine mechanisms but the battery's power is not enough to spark the plugs. A car's spark plug needs loads of electricity to jump start but a car's storage battery can only produce 12 volts. That is why a device called an autotransformer is needed and one form of an autotransformer found in a car is the ignition coil. The importance of the ignition coil should never be taken for granted because without it, your car will not perform as what is expected from it. The Geo ignition coil which is a specific form of an autotransformer, converts the storage battery's 12 volts in to a thousand volts needed by the car's spark plugs. The Geo ignition coil together with your car's contact breaker alters the 12 volts of current that is being discharged by the storage battery into loads of electricity required by the spark plug to start the combustion process. The combustion process is a method of burning air and fuel mixture to provide power in order for the car to move. Optimum burning of air and fuel mixture or combustion is one of the keys in having an optimum performance vehicle. Now if your ignition coil is already damaged, you should replace it immediately if you want to have a car with an optimum performing engine. Our store offers you a wide range of high quality performance and replacement parts for your vehicle. Our wide collection of car products includes the Geo ignition coil. So if you are looking for a trusted source of car parts, just visit us. Just visit our online store and browse our catalogs for the car part that you need. However, if you encounter some problems along your search, we have our online agents on standby and ready to assist you.