The Litens 999659 Serpentine Belt Tensioner Assembly is a high-quality OE/OEM part made by Litens in Germany. This accessory drive belt tensioner assembly is designed for Mercedes-Benz vehicles and offers reliable performance. With interchange part numbers L8999659A, 999659A, LTN-999659A, and LTN999659A, this tensioner assembly guarantees a perfect fit and seamless operation. Made to strict OE quality standards, the Litens 999659 Serpentine Belt Tensioner Assembly ensures efficient and safe driving for your vehicle. B-2