The timing chain functions just as that a timing belt does. The difference between your two is simply the material and location. One is made from 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 due to their material, less costly 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 can be found beyond the engine and have a tendency to dry out and crack. Within the last few years, timing chain china however, more vehicle manufacturers have built-in timing chains back to some vehicles with huge improvements such as a reduction in noise and vibrations, different then a timing belt not all water pumps are powered by the timing chain. Verify your owner’s manual to determine what kind of timing procedure your vehicle utilizes because they can vary greatly from year to 12 months and by an auto manufacturer.