An alternator Belt drives the engine's alternator. Keeping the car's battery charged is the job of an alternator. Without the alternator Belt the battery would die after a short amount of driving. The spinning is made possible by the Alternator Belt that runs from the pulley on the alternator to the crank-shaft.
The type of the Belt around the alternator depends solely on the make of the vehicle. Older cars are fitted with a Cogged Belt for the alternator, while newer cars use Poly-V Belts as an alternator Belt.
#) Best suited for next-generation high speed engines
#) Engineered and chemically treated modulus & low stretch tensile cords for higher loads without stretch
#) Fibre re-inforced rubber matrix base compound, for better grip and lateral rigidity
#) Excellent resistant to oil and heat, suitable to operate on small pulley diameters
#) Suitable for Heavy Earth Moving Machinery applications
#) Temperature range: -25ºC to +100ºC
#) Conforms to BS AU 150b, SAE J 636, JASO E 107 standards