the towers of the distributor cap. The camshaft drives the rotors into full gear and creates excellent spark timing which assists the ignition system in having a smooth and reliable operation. When you start the ignition, the different components in the engine simultaneously operate in order to increase the amount of current that the engine's battery produces. The distributor rotor engages in spinning motions so that the electricity in the ignition coil can start the engine without troubles. A distributor rotor with carbon and abrasive debris can deliberately affect its performance. If you want to maintain the efficiency of your Mercury distributor rotor, there is a great need to regularly check it for damages. Once it suffers from wear and tear, you need to find a replacement so as not to compromise the entire operation of the ignition system and your vehicle as well. It is recommended that distributor rotors should be replaced every tune up or two years. Our site features high quality distributor rotors such as Mercury distributor rotor. Our distributor rotors are capable of generating more sparks because of their high conduction ability and their heavy duty components make them even tougher as compared to other distributor rotors offered in the market today. So get your next Mercury distributor rotor from us if you're in the market for a replacement. There are two ways for you to order from our site. You can drop your orders through our online catalog or you can contact us through our toll-free hotline.