The color matched hubcaps were available on lower trim cars I believe (Euro 280SL, etc). To use the hub caps you will have to find a set of 14" steel wheels, or the rare 14" steel-look alike alloy wheels off of a 240D. Later cars also had 15" alloys

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine