MAINTAINS TENSION: Alternator tensioner lever belt drives important engine parts such as the alternator, and coolant pump, any worn or torn in it may result into a breakdown or possible engine damage. Ensures no strange noises or electrical failures.DURABILITY: Providing best quality to the customers is our prime focus. Our engine belt tensioner is made of a robust and sturdy material for required durability and long-lasting use. It ensures best match to the engine’s durability target.