Your Isuzu employs a distributor in order to operate. This device is a vital component in the ignition system of the internal combustion engine. It is designed to route high voltage from the ignition coil and deliver it to the spark plug in accurate firing order. Insulated from the vehicle's body, this device comes with a rotor or a rotating arm inside the distributor cap, just on top of the distributor shaft. It has a metal component that makes contact to the central high voltage cable from the coil by way of a spring loaded carbon brush. This metal part of the rotor passes but does not touch the output contacts that links to the spark plug of each cylinder via the high tension cable. In this process, the distributor is able to accurately fire high voltage to the spark plug. The distributor cap, on its part, is designed to cover the distributor and its rotor. Typically, it comes with posts on every cylinder. In points-ignition system, a central post is used for the coil voltage coming from the distributor. In High Energy Ignition system, the central post is no longer needed as the ignition coil sits on the top of the distributor. Moreover, there is a terminal on the side of the cap that corresponds to every post while the plug terminals are set around the cap circumference in accordance to the firing order so that the secondary voltage can be sent to the right spark plug precisely. Although it is made of high-grade material, the distributor caps still succumb to heat and vibration. However, it is quite straightforward and easy on the pocket to replace it. The internet helps you secure a fine replacement to the old wearing distributor cap. This website provides you a complete list of auto part products for all car makes and models including top class Isuzu distributor parts.