The INA Drive Belt Idler Pulley (75 mm) - 5320751100 is a high-quality replacement part for vehicles that use a serpentine belt system. This pulley is designed to help guide and tension the drive belt, ensuring smooth and efficient operation of the engine's accessories such as the alternator, power steering pump, and air conditioning compressor. It has a diameter of 75 mm and is made of durable materials to withstand the constant rotation and tension of the belt. This product is manufactured by INA, a trusted brand in the automotive industry known for its reliable and long-lasting parts.