This Accessory Drive Belt Tensioner Assembly-VIN: 9 by Dayco, with part number 89266, is a high-quality replacement part for your vehicle's idlers and tensioners. It is designed to ensure the proper tension of your car or truck's accessory belt, which in turn keeps your engine running efficiently. With its durable construction and reliable performance, this tensioner assembly is an essential component of any well-functioning engine. Whether you're looking to replace a worn-out part or simply upgrade your vehicle's performance, this Dayco tensioner assembly is the perfect choice.