The timing chain functions just as that a timing belt does. The difference between the two is merely the material and area. One is constructed of metal and the various other, a reinforced rubber. Though timing timing chain china chains were utilized first, belts were introduced 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 are located outside of the engine and have a tendency to dry out and crack. In the last few years, however, more automobile manufacturers have integrated timing chains back to some vehicles with huge improvements like a reduction in noise and vibrations, different a timing belt not all drinking water pumps are driven by the timing chain. Check your owner’s manual to determine what kind of timing operation your vehicle utilizes because they may vary from year to year and by an auto manufacturer.