This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
Split Unit : Replaces original single piece. As originally supplied by Mercedes, the front and rear mufflers are configured as a single unit and sold as 210 490 36 21. When replacing the original system, (1) 23.397.82 (Center) and (1) 23.397.84 (Rear) are required.