Alternator is an electrical power generating unit of a car and it is a major component of the vehicle's charging system, which is driven by alternator Belt. Thus Alternator Belt plays an important role in converting the mechanical energy into electrical energy.

Without the alternator Belt alternator would not be able to provide sufficient charge to the battery, power steering would fail to operate and the car may overheat.

When the engine is running, alternator charges the car battery and supplies additional electric power to the other vehicle electrical systems.

The spinning is made possible with the help of alternator Belt which runs from the pulley on the alternator to the crank-shaft.

The type of the alternator Belt around the alternator depends solely on the make of the vehicle.

Though new generation cars are fitted with Poly-V Belts which drives the alternator and multiple parts of the engine, as a result, there is no need for a specific alternator Belt.

But the old version of cars, had a separate alternator Belt, mainly a raw edge cogged Belt to drive the alternator.



    • Best suited for next-generation, high-speed engines.
    • Cog profile offers enhanced flexibility and heat dissipation rate.
    • Higher power transmission capacity, best suited for smaller diameter pulleys.
    • Engineered and chemically treated with low stretch tensile cords for higher loads.
    • Compounded for better grip and lateral rigidity.
    • Excellent resistance to oil and heat.
    • Suitable for HEMM (Heavy earthmoving machinery) applications.
    • Temperature range: -25°C to +100°C and -45°C to +120°C in case of EPDM Belts.

Constructional Details

  1. Specially designed top fabric for high resistance to wear and crack
  2. Special high adhesion compound for improved dynamic adhesion performance
  3. Specially treated polyester cord ensures minimal stretch of the belts
  4. Fibre loaded compression compound for high power transmission and dimensional stability
  5. Moulded cogged profile for superior flexibility and heat dissipation

Product Range

Section Top Width (mm) Thickness (mm) Angle (Degree) Manufacturing Range Length Designation
Min. (mm) Max. (mm)
X9.5 / AVX10 10.0 8.0 36 550 5000 La
X12.5 / AVX13 13.0 10.0 36 550 5000 La
X10A 10.5 8.0 36 550 5000 Le
X11A 11.5 8.0 36 550 5000 Le
X13A 13.5 9.0 36 550 5000 Le
X15A 17.0 10.5 38 550 5000 Le
X17A 18.5 11.0 36 550 5000 Le
X20A 21.5 12.5 36 550 5000 Le

Reference standards

BS ISO-5287, DIN 7753-3, SAE J 636, JASO E 107


High-temperature industrial drives, compressors, blowers, high power presses, hot rolling mills, textile machinery, ID fan, FD fans, excavators, pumps, generators, pulverisers, etc.

Product Label

Related Products

Automotive Ribbed / Poly V-Belts
Automotive Timing Belts