Abstract: In an arrangement for driving accessories of an internal combustion engine such as a water pump and a fan by means of a V-belt drive operated by an engine crankshaft wherein a first belt pulley is mounted on the crankshaft for rotation therewith, a second pulley is mounted on a water pump shaft to be driven by the first pulley via a first V-belt, a third pulley is mounted on the water pump shaft for rotation therewith and a fourth pulley is rotatably mounted on the crankshaft or an extension thereof and driven by the third pulley via a second V-belt and a fan is mounted for rotation with the fourth pulley via clutch so that the fan can be operated at a speed different from the crankshaft speed.