The timing chain functions just as that a timing belt does. The difference timing chain china between the 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 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 outside of the engine and tend to dry out and crack. In the last few years, however, more automobile manufacturers have included timing chains back into some vehicles with huge improvements such as a reduction in sound and vibrations, different then a timing belt not absolutely all water pumps are driven by the timing chain. Check your owner’s manual to determine what kind of timing operation your vehicle utilizes because they may vary from year to season and 181.1 1by a car manufacturer.