Heater valves & duo valves

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Tested genuine heater valves and duo valves for classic Mercedes – W124, W126, R129 & co. The duo valve is the most common cause when the heating doesn't get warm or heats constantly. All valves are tested before shipping. Guide: Heating not getting warm? Check & replace the duo valve.

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All models W124E-Class 1984–1997 W201190 series 1982–1993 W116S-Class 1972–1980 W126S-Class 1979–1991 W1231976–1986 W107 / R107SL 1971–1989 W140S-Class 1991–1998 W463G-Class from 1989