The timing chain functions in the same way a timing belt does. The difference between the two is simply the material and location. One is constructed of metal and the other, a reinforced rubber. Though timing chains were used first, belts were launched into automobiles in the 1960s. Belts are quieter and because of their material, less expensive to create. Timing chains are housed within the engine and receive lubrication from engine essential oil and can last a considerably long time, while timing belts can be found beyond the engine and tend to dry and crack. Within the last couple of years, however, more automobile manufacturers have built-in timing chains back into some vehicles with vast 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. Verify your owner’s manual to know what kind of timing procedure your timing chain china vehicle utilizes as they may vary from year to season and by a car manufacturer.