I've been trying to purchase a new vacuum check valve for the 1984 300d turbo, but every site I visit has the same generic valve with too-small-ends and no plug-ins for the car's vacuum systems. This check valve would be located in-line between the brake booster and the pump, have two small plug-ins for the transmission/climate control systems, and have slide fittings for the black rubber line that fits over both ends. If anyone found a part number or a website that supplied the correct part and posted it here that would be great. Thanks !

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Got cars and bike:
1984 300D, 310K
2000 kawi ex500
1998 grand marquis, 125K

You have to buy the entire line; the valve is not sold separately.

http://catalog.peachparts.com/RenderScriptTemplate.epc?_cmd=epccat_VehicleAAA&cookieID=2F10VABWU2FV0T4JTG&yearid=1984%40%401984&makeid=MB%40%40MB%40%40X&modelid=300%2DDT%2D001%40%40300D++Turbo&catid=N%40%40Brake&mode=PA&subcatid=N4020@@Booster+Vacuum+Hose&source=www.peachparts.com&clientid=catalog.mercedesshop

Thanks for the help.