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Serpentine belts are an integral component of modern automotive engines, playing a crucial role in powering various accessories like the alternator, power steering pump, water pump, and air conditioning compressor. This singular, long belt reduces the number of components needed and enhances engine efficiency. If you are considering buying a serpentine belt, understanding its function, the factors to consider, and the best practices for selection can significantly improve your purchasing decision.


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2. Labor Costs Replacing an engine belt isn't always a straightforward task. The labor involved in changing a serpentine belt can take anywhere from one to two hours, depending on engine design and accessibility. Consequently, labor costs can add an additional $75 to $150 to the final bill. Timing belts, due to their complexity and the tight space in many engine bays, can take significantly longer to replace—often resulting in labor costs that can exceed $300.


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