This is an original factory Mercedes part.

This is the push-pull switch in the dash to turn on or off the heated rear window defroster.

This switch has a bulb in the end to light up the knob when on.

The Mercedes part number for this is 001-821-82-51.

The current retail price is $159.00.

This new genuine Mercedes defogger switch will fit the following models:

USA Models:

220 - 115-010 - mid 1972 from chassis # 088660, 1973

220 D - 115.110 - mid 1972 from chassis # 226234, 1973

230.4 - 115.017 - 1974, 1975, 1976

240 D - 115.117 - 1974, 1975, 1976

250 - 114.011 - mid 1972 from chassis # 009741

250/C - 114.023 - mid 1972 from chassis # 006659

280 - 114.060 - 1973, 1974, 1975, 1976

280/C - 114.073 - 1973, 1974, 1975, 1976

280 S - 108.016 - mid-1971 from chassis # 10.084695, 12.085322

280 SE - 108.018 - mid-1971 from chassis # 10.090517, 12.091055

280 SE 4.5 - 108.067 - 1971, 1972, 1973

280 SEL 4.5 - 108.068 - 1971, 1972, 1973

300 D - 115.114 - 1975, 1976

300 SEL 3.5 - 109.056 - 1971 from chassis # 007885

300 SEL 4.5 - 109.057 - 1972 from chassis # 000394, 1973

300 SEL 6.3 - 109.018 - 1971 from chassis # 006037

600 - 100.012 - from chassis # 001979

600 - 100.014 - from chassis # 001979

600 - 100.016 - from chassis # 001979

European and Japanese Models:

600 - 100.012 - from chassis # 002050

600 - 100.014 - from chassis # 002050

600 - 100.016 - from chassis # 002050

All applications are accurate to the best of my knowledge, however I advise double checking with your dealer for application to your vehicle, or email me with your VIN # for clarification. I can not be responsible for inaccurate or missing application data, however I will take an item back if the error is mine.