The MB Classic Center in California has been an invaluable source of correct part information for me with our '78 300SD. They do not sell parts but they give the brand, part number, list cost and if it is available in the U.S. according to their information. It works well to have this knowledge when ordering from anyplace, including a dealer. They haven't been wrong about anything I've asked and have been very cordial and patient with me.

Worth the effort.

Jim W.