The timing chain functions just as a timing belt does. The difference between the two is merely the material and location. One is made from metal and the other, a reinforced rubber. Though timing chains were used first, belts were released into vehicles in the 1960s. Belts are quieter and timing chain china because of their material, less expensive to create. Timing chains are housed within the engine and receive lubrication from engine essential oil and can last a considerably long time, while timing belts can be found beyond the engine and tend to dry and crack. Within the last couple of years, however, more automobile manufacturers have included timing chains back to some vehicles with vast improvements like a reduction in noise and vibrations, different a timing belt not all drinking water pumps are powered by the timing chain. Check your owner’s manual to determine what kind of timing operation your vehicle utilizes because they can vary greatly from year to season and by a car manufacturer.