Alternator Idler Pulley
The alternator idler pulley is an important component in a car's alternator belt system. Its main function is to adjust belt tension and prevent vibration or slipping.
This component is a pulley or roller mounted on a bearing. As it rotates, it ensures the alternator belt moves along the correct path, guaranteeing optimal performance of the alternator and other belt-driven components, such as the power steering pump and air conditioning compressor.