The timing chain functions just as a timing belt does. The difference between your two is simply the timing chain china material and location. One is constructed of metal and the other, a reinforced rubber. Though timing chains were utilized first, belts were released into automobiles 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 considerably long time, while timing belts can be found beyond the engine and tend to dry out and crack. In the last couple of years, however, more vehicle manufacturers have integrated timing chains back into some vehicles with huge improvements such as a reduction in sound and vibrations, different a timing belt not absolutely all water pumps are powered by the timing chain. Examine your owner’s manual to determine what kind of timing procedure your vehicle utilizes as they may vary from year to year and by an auto manufacturer.