The timing chain functions in the same way that a timing belt does. The difference between the two is simply the timing chain china 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 create. 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 tend to dry and crack. Within the last few years, however, more vehicle manufacturers have built-in timing chains back to some vehicles with huge improvements like a reduction in noise and vibrations, different then a timing belt not all drinking water pumps are powered by the timing chain. Examine your owner’s manual to determine what kind of timing procedure your vehicle utilizes because they can vary greatly from year to year and by a car manufacturer.