The timing chain functions in the same way a timing belt does. The difference between the two is merely the material and area. One is constructed of metal and the additional, a reinforced rubber. Though timing chains were utilized first, belts were launched 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 essential oil and can last a long time, while timing belts can be found beyond the engine and have a tendency to dry and crack. Within the last few years, however, more vehicle manufacturers have integrated timing chains back into some vehicles with huge improvements such as a reduction in noise and vibrations, different then a timing belt not absolutely all drinking water pumps are timing chain china driven by the timing chain. Examine your owner’s manual to know what kind of timing procedure your vehicle utilizes because they can vary greatly from year to 12 months and by a car manufacturer.