The timing chain functions just as a timing belt does. The difference between your two is merely the timing chain china material and location. One is constructed of metal and the additional, a reinforced rubber. Though timing chains were utilized first, belts were presented into vehicles in the 1960s. Belts are quieter and because of their material, less costly to create. Timing chains are housed within the engine and receive lubrication from engine 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, however, more vehicle manufacturers have built-in timing chains back into some vehicles with vast improvements such as a reduction in sound and vibrations, different then a timing belt not all water pumps are driven by the timing chain. Examine your owner’s manual to determine what kind of timing procedure your vehicle utilizes as they can vary greatly from year to season and by an auto manufacturer.