The Dayco 89148 Accessory Drive Belt Tensioner Pulley is a high-quality component designed for Subaru, Honda, and Nissan vehicles. This tensioner pulley, specifically designed for gas engines, features an outside diameter of 82mm and a width of 27mm. It is part of the accessory drive belt system components and functions to ensure proper tension and performance of the drive belt. Built by the reputable brand Dayco, this tensioner pulley is a reliable and essential part for maintaining the optimal functioning of your vehicle's engine.