Although idler pulleys dont directly spin an accessory, their function in the engine bay is no less vital. When these wear they begin to squeak and squeal which can range from annoying to deafening. Turner Motorsport carries replacement idler pulleys that will eliminate the noise and keep your belts turning smoothly.
If your accessory belt idler pulley shows signs of excessive wear—such as wobbling, grinding, or squealing from a failing bearing—it should be replaced before it leads to belt failure. When replacing your idler pulley, it's a good time to inspect other belt drive components like the tensioner and belt for wear. Turner Motorsports offers a full selection of belts, tensioners, pulleys, and related hardware to keep your BMW’s belt drive system running smoothly.
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