The timing chain functions in the same way that a timing belt does. The difference between your two is merely the material and location. One is constructed of metal and the additional, a reinforced rubber. Though timing chains were used first, belts were presented into vehicles in the 1960s. Belts are quieter and due to their material, less costly to produce. Timing chains are housed within the engine and receive lubrication from engine oil and can last a long time, while timing belts can be found beyond the engine and have a tendency to dry and crack. In the last couple of years, however, more vehicle manufacturers have built-in timing chains back into some vehicles with vast improvements such as a reduction in sound and vibrations, different a timing belt not absolutely all drinking water pumps are driven by the timing chain. Examine your owner’s manual to determine what kind of timing procedure your vehicle utilizes because they can vary greatly from year to year and by a car manufacturer.