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V-Ribbed Belt (Poly V-Belt) for your car

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V-Ribbed Belt (Poly V-Belt) - order and buy easily

V-Ribbed Belt (Poly V-Belt) from leading manufacturers

  • BOSCH V-Ribbed Belt (Poly V-Belt)
  • FEBI BILSTEIN V-Ribbed Belt (Poly V-Belt)
  • MAPCO V-Ribbed Belt (Poly V-Belt)
  • SKF V-Ribbed Belt (Poly V-Belt)
  • TOPRAN V-Ribbed Belt (Poly V-Belt)
  • SWAG V-Ribbed Belt (Poly V-Belt)
  • METZGER V-Ribbed Belt (Poly V-Belt)
  • JP GROUP V-Ribbed Belt (Poly V-Belt)
  • Buy at the best price here JAPANPARTS V Ribbed Belt
  • Buy at the best price here GATES V Ribbed Belt
  • Buy at the best price here LEMFÖRDER V Ribbed Belt
  • Buy at the best price here BLUE PRINT V Ribbed Belt
  • Buy at the best price here INA V Ribbed Belt
  • Buy at the best price here CONTITECH V Ribbed Belt
  • Buy at the best price here HERTH+BUSS JAKOPARTS V Ribbed Belt
  • Buy at the best price here MAGNETI MARELLI V Ribbed Belt
  • SASIC
  • DAYCO
  • RUVILLE
  • TRISCAN
  • BTA
  • SNR
  • MEYLE
  • BUGIAD
  • NIPPARTS spare parts catalog
  • ASHIKA spare parts catalog
  • OPTIBELT spare parts catalog
  • AE spare parts catalog
  • PETERS ENNEPETAL spare parts catalog
  • TRUCKTEC AUTOMOTIVE spare parts catalog
  • HUTCHINSON spare parts catalog
  • ACKOJAP spare parts catalog
  • BANDO
  • FAI AutoParts
  • AUTOMEGA
  • DT

Your V-Ribbed Belt (Poly V-Belt) worn out? » Read more about common malfunctions • Repair • Replacement manual

More power, less squeak with the serpentine belt

Who still remembers the ghastly sound of a car with a slack V-belt driving by? The reason why this sound has all but disappeared from the public notion is the serpentine belt. This type of belt (poly-v or v-ribbed) has almost completely replaced the traditional V-belt. Nevertheless, noise reduction was not the real reason for the re-design of the drive belt.

Higher performance by the same generator

The reason for replacing the V-belt by the serpentine belt lies in higher user expectations. The modern car is equipped with considerably more electronics than used to be the case. Seat heating, air conditioning, safety and comfort systems, sensors, powerful audio systems etc. demand a lot more from the generator than the old 12 V dynamos would be able to supply. Installing larger generators would be one solution for enhancing the electricity supply in the car. This would however become disproportionally expensive. Instead, the available generator is run at a higher speed. This has however a significant disadvantage: the bearing wears quicker when the generator is driven by a traditional V-belt.

Diminish wear by freewheeling

To get more performance out of the same generator and in the meantime keep the wear of the bearings under control, manufacturers use a trick: in modern cars the generator has a flywheel. This means it can only be driven in one direction. When the engine is revving low, the freewheeling flywheel maintains the rotational energy until it has reached the new rpm. In a rigid connection between V-belt and generator, the generator speed was permanently reduced and subsequently enhanced. Freewheeling spares the bearings with less wear as a result.

Tensioning the serpentine belt

The belt must maintain tension for optimal drive of the flywheel generator. This applied to e V-belt as well. In case of a rigid connection between drive and generator, the belt tension was adjusted directly on the generator. The flywheel requires an external tensioner pulley, maintaining flexible tension. Flywheel and tensioner pulley in their turn need a broad contact surface– and only for this reason the narrow V-belt had to be replaced by the considerably broader serpentine belt.

Same performance, larger surface

The serpentine belt is a flat belt strengthened by longitudinal ribs. The V-shaped ribs have the same function as on the traditional V-belt: they stabilise the belt and enhance the contact surface on the generator flywheel and the drive wheel of the engine. In many cars the serpentine belt additionally drives the water pump, causing a lot of stress for the component.

Replacement of the serpentine belt

The replacement of a serpentine belt is not as simple as it used to be. Expertise on the functioning of the tensioner is required. Modern branded belts are very durable. They are replaced simultaneously with the flywheel and tensioner on occasion of a service interval. This is not as cheap as a V-belt replacement used to be, although it re-establishes full functionality of the car for the coming maintenance intervals in one go. If the belt breaks down prematurely, this is probably the result of mechanical damage. This should be most certainly checked. Often rodents are responsible for prematurely malfunctioning serpentine belts. The belt itself costs only between 5 and 20 euro (£4.50 - £18) and with some dexterity can be replaced in a couple of minutes. Due to the high strain, branded quality is essential. Only this ensures the desired security for long and relaxed driving.

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