How often or how many kilometers should the timing belt be replaced?

The timing belt is usually replaced once every two years or about 6W kilometers.

Because the timing belt is a preventive replacement, it should be replaced before the service life specified by the manufacturer, because once the belt breaks, it will directly affect the driving safety.

During the working process of an automobile engine, there are four processes in the cylinder: air intake, compression, work doing and exhaust. The timing of each step should be matched with the movement state and position of the piston, so that the air intake and exhaust can be coordinated with the lifting of the piston. Timing belt plays the role of "bridge" in the engine, and transmits the force to the corresponding parts under the drive of crankshaft.