Alex Crow recommends using genuine parts, and will always be happy to use Mercedes parts on your car.
However, there are examples of parts that we can supply from other sources. Some of these parts are exactly the same as genuine items, but for less cost. Examples include fuel injection parts, filters, glow plugs, spark plugs, various sensors, suspension components and many others. These parts are often made by companies that are original equipment suppliers to Mercedes-Benz.