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The Auxiliary Poly V Drive Belt as become increasingly popular as an alternative to running different belts for each component, the Poly V Belt runs components from the alternator such as power steering, water pump, air conditioning and electric fan. The belt can however develop wear in its ribs due to misalignment on the pulleys or improper tension being produced from the tensioner this reduces its efficiency and will make a ‘squealing’ noise, to prevent damage it is advised to replace the Poly V Belt when this happens.

On replacement of the Poly V Belt it is also recommended to replace the pulleys and possibly the tensioner to prevent the new belt from wearing in the same way.