The timing chain functions just as a timing belt does. The difference between your two is simply the material and location. One is made from metal and the additional, a reinforced rubber. Though timing chains were used first, belts were launched into vehicles in the 1960s. Belts are quieter and due to their material, less expensive to produce. Timing chains are housed within the engine and receive lubrication from engine essential oil and can last a long time, while timing belts are located outside of the engine and have a tendency to dry out and crack. In the last few years, however, more automobile manufacturers have timing chain china built-in timing chains back to some vehicles with huge improvements like a reduction in noise and vibrations, different 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 vehicle utilizes as they may vary from year to calendar year and by a car manufacturer.