The Elring Mercedes Engine Crankshaft Seal Retainer - 455420 is a high-quality, durable seal retainer designed specifically for Mercedes engines. It is made from premium materials and is specifically designed to fit and function perfectly with Mercedes engines. The seal retainer helps to securely hold the crankshaft seal in place, preventing any leaks or damage to the engine. This product is a reliable and essential component for maintaining the proper functioning of your Mercedes engine.