For an engine to be able to burn the fuel, it requires a spark. While most people think that the spark plug generates the spark, it is actually only the terminus of an incredibly complex ignition system. The source of the spark is at the ignition coil. It is a device that takes voltage from the battery and transforms it into a spark that can exceed 50,000 volts in some instances. That spark is then carried to the distributor which distributes it to the different cylinders via the spark plug wires and then the spark plugs. Because the ignition coil is the source of the spark, it is important to keep it in great shape and to always have a quality coil, such as the Accel ignition coil. The Accel ignition coil is made by a company with over 25 years of experience in the design and manufacture of performance engine components. Accel ignition coils come in a number of models, from basic universal styles to high end racing models suitable for use on drag cars. For off road applications, there are also vibration resistant Accel ignition coils. If you are having trouble with your ignition system and an insufficient spark, consider replacing your aging ignition coil with a high quality Accel ignition coil. A hot spark gives you a good burn, which equals more power. Motor hobbyists completely deserve world-class customer assistance when shopping for dependable parts for their car or truck. To support that need, we run a round-the-clock technical help hotline to answer your questions. To sweeten the deal, we always offer free shipping for each order more than $50. If you can find a better price, call us - we always beat any legitimate auto part price.