The Mercedes 200 250 260 300 Oil Pump Tensioner Guide by febi bilstein is a high-quality guide rail designed for maintaining proper engine timing. Made with durable materials, this guide rail ensures accurate and efficient performance of the oil pump tensioner. With a manufacturer part number of 25050 and reference OE/OEM number of 6011810159, this product is specifically designed for Mercedes W124 models, providing a reliable solution for ensuring engine functionality.