The timing chain functions in the same way a timing belt does. The difference timing chain china between the two is merely the material and location. One is constructed of metal and the other, a reinforced rubber. Though timing chains were utilized first, belts were launched into vehicles in the 1960s. Belts are quieter and because of their material, less costly 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 can be found outside of the engine and have a tendency to dry out and crack. Within the last couple of years, however, more vehicle manufacturers have included 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 water pumps are powered by the timing chain. Examine your owner’s manual to know what kind of timing procedure your vehicle utilizes because they may vary from year to year and by an auto manufacturer.