The original equipment engine balance shaft chain tensioner has been manufactured to provide the same performance, durability, and service life as installed during vehicle production. This tensioner applies a pre-set tension to the balance shaft chain to prevent unnecessary balance shaft noise and component wear. Product Features:Designs are enhanced and amended to incorporate updates, upgrades, and Technical Service BulletinsOffering the quality, reliability, and durability of OEManufactured to OE specification for fit, form, and function