The Poly-V type auxiliary drive belt (1) controls the alternator (2) and, where applicable, the air conditioning compressor (3).Tensioning is carried out by an automatic tensioner (5) and two fixed tensioners (4), which means that no maintenance operations are required.The crankshaft pulley (6) contains a flexible sector that reduces crankshaft torsional vibration and stresses on the belt and thus on auxiliary engine components.
