The timing chain functions just as a timing belt does. The difference timing chain china 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 introduced into vehicles in the 1960s. Belts are quieter and due to their material, less expensive to produce. Timing chains are housed within the engine and receive lubrication from engine oil and can last a long time, while timing belts are located outside of the engine and have a tendency to dry out and crack. In the last couple of years, however, more vehicle manufacturers have integrated timing chains back to some vehicles with vast improvements such as 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 know what kind of timing procedure your vehicle utilizes as they can vary greatly from year to calendar year and by a car manufacturer.