One new factory original Mercedes Benz oil filter housing through bolt (made in Germany), part number 000.184.33.71.  This fits:

Mercedes Benz 280CE 1972 - 1976 (M110)
Mercedes Benz 280E 1972 - 1976 (M110)
Mercedes Benz 280SL 1976 - 1985 (M110)
Mercedes Benz 280SLC 1976 - 1982 (M110)
Mercedes Benz 280SE 1976 - 1980 (M110)
Mercedes Benz 280SEL 1976 - 1980 (M110)
Mercedes Benz 280S 1972 - 1981 (M110)
Mercedes Benz 280 1972 - 1980 (M110)
Mercedes Benz 280C 1972 - 1980 (M110)