A V-belt interchange is the substitution or replacement of the V-belt of an automobile with one made by a different manufacturer or the manufacturer of the auto. The V-belt is a type of transmission belt that transfers the power of the engine to other components of an vehicle.
The V-belt uses pulleys to connect the crankshaft connecting the engine to the transmission to power components such as the water pump, air-conditioner compressor, alternator and other parts. Its name comes from the series of grooves, and its appearance in the engine compartment to connect these components. The interchange is simply the replacement or interchanging of a belt made by one manufacturer for a belt made by another. It also refers to the method of cross-referencing used to determine a suitable replacement.