The spark plug of your Volkswagen Golf’s ignition system is in charge to handle two different functions. One is to ignite the mixture of air and fuel and two is to remove the heat away from the combustion chamber. The spark plug like the Bosch spark plug allows the electrical energy to be transmitted in order to turn the fuel into work energy. It requires a sufficient amount of voltage to supply through the ignition system in order to let the spark jump from the spark plug gap. Here, electrical performance is produced. Thermal performance is also important in which is produced according to the spark plug’s heat range. This is the condition wherein the temperature of the spark plug must be maintained low enough to prevent the occurrence of pre-ignition yet, high enough to prevent the condition of fouling. This means that spark plug does not actually produce heat but rather eliminates it. It is like a heat exchanger that drags the unwanted heat energy away from the combustion chamber while transferring it to the cooling system. The ability of the spark to eliminate heat varies according from the heat range that is determined by the volume of the gas around the insulator, material composition of the center of the electrode as well as the porcelain insulator, and the length of the insulator nose. The location of the spark plug makes it prone to wear and tear. And you know that troubles with your 1997 Volkswagen Golf’s spark plug can severely affect your car’s performance so before your 1996 Volkswagen Golf experience serious trouble, consider a replacement right away. We have the F1000-32106 Bosch spark plug that would be the perfect replacement for your stock and damaged spark plug.