HVAC Pressure Switch 4 Seasons For 1984-2001 Mack MS200P Mid-Liner

1984 Mack MS200P Mid-Liner OE No. 4379RD546460; 4379RD559761;. 1985 Mack MS200P Mid-Liner OE No. 4379RD546460; 4379RD559761;. 1986 Mack MS200P Mid-Liner OE No. 4379RD546460; 4379RD559761;. 1987 Mack MS200P Mid-Liner OE No. 4379RD546460; 4379RD559761;.