A timing belt runs the engine camshaft (or camshafts in a dual-cam engine).  It’s called timing belt because its main job is to precisely time valve opening and closing with up-and-down movement of the pistons. Timing belt replacement is one of the high-price maintenance items that many motorists have to deal with. How often does the timing belt need to be replaced? Timing belt recommended replacement intervals vary from 60,000 to 106,000 miles.

It is possible for belts, chains, and water pumps last longer than the recommended mileage. But if a component fails, it can result in major engine damage. So as a piece of mind it is good to perform maintenance within recommended mileage and time frame given by the manufacturer.