The parts page says it in the intake manifold, and the base is blue in color. Look here: http://catalog.peachparts.com/ShopByVehicle.epc?q=1995-Mercedes--benz-E3--0--Sedan-Climate--Control&yearid=1995%40%401995&makeid=63%40%40MERCEDES%2DBENZ%40%4063%40%40MERCEDES%2DBENZ%40%40X&modelid=6392%3ABT%7C5%3AMBC%7C1508%3AED%7C10000022%40%40E320+Sedan&catid=242213%40%40Climate+Control&subcatid=242256@@A%2FC+ACC+Temp+Sensor&mode=PA