The timing chain functions in the same way that a timing 
belt does. The difference between the two is simply the material and location. One is constructed of metal and the additional, a reinforced rubber. Though timing chains were used first, belts were released into automobiles in the 1960s. Belts are quieter and because of their material, less expensive to produce. 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 beyond the engine and tend to dry out and crack. In the last couple of years, however, more automobile timing chain china 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 water pumps are driven by the timing chain. Check your owner’s manual to determine what kind of timing operation your vehicle utilizes as they can vary greatly from year to yr and by a car manufacturer.