The timing chain functions in the same way a timing belt does. The difference between your two is merely the material and area. One is made from metal and the other, a reinforced rubber. Though timing chains were utilized first, belts were presented into automobiles in the 1960s. Belts are quieter and because of their material, less expensive to create. Timing chains are housed within the engine and receive lubrication from engine oil and can last a considerably long time, while timing belts are located outside of the engine and tend to dry and crack. Within the last few years, however, more vehicle manufacturers have built-in timing chains back to some vehicles with huge improvements such as a reduction in noise and vibrations, different then a timing belt not all drinking water pumps are powered by the timing chain. Examine your owner’s manual to determine what kind of timing operation your vehicle utilizes as they may vary from year to 12 months and by a car manufacturer.