This Four Seasons HVAC Binary Switch fits your 1985 Mercedes-Benz 300CD and is perfect for a tune up or performance upgrade. .
FOUR SEASONS HVAC Binary Switch Fits 1994-1995 Mercedes-Benz E420
FOUR SEASONS HVAC Binary Switch Fits 1987-1989 Mercedes-Benz 260E
FOUR SEASONS HVAC Binary Switch Fits 1985 Mercedes-Benz 500SEL
FOUR SEASONS HVAC Binary Switch Fits 1985 Mercedes-Benz 380SE
FOUR SEASONS HVAC Binary Switch Fits 2003-2010 Ford F-350 Super Duty
FOUR SEASONS HVAC Binary Switch Fits 1997-2000 INFINITI QX4