Belts continue to be one of the most replaced wear items on vehicles today. Serpentine belts last a lot longer than older V-belts ever did, but they still wear out over time. The typical replacement interval for serpentine belts and flat belts today is around 90,000 miles – which for many vehicles means only once every seven to nine years!
Over the past 20 years, we have seen water pumps and cooling systems evolve to improve start-up emissions. We have also seen a revolution in the material used for engine blocks, cylinder heads and cooling system components. Today, coolant may flow through an iron block, aluminum cylinder head and plastic thermostat housing.