The timing chain china timing chain functions in the same way a timing belt does. The difference between your two is simply the material and area. One is constructed of metal and the various other, a reinforced rubber. Though timing chains were used first, belts were launched into vehicles in the 1960s. Belts are quieter and because of 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 beyond the engine and have a tendency to dry and crack. In the last few years, however, more vehicle manufacturers have included timing chains back to some vehicles with huge improvements such as a reduction in noise and vibrations, different a timing belt not absolutely all water pumps are powered 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 yr and by an auto manufacturer.