HVAC Pressure Switch 4 Seasons For 1986-2000 Mack CS250P Mid-Liner

1986 Mack CS250P Mid-Liner OE No. 4379RD546460; 4379RD559761;. 1987 Mack CS250P Mid-Liner OE No. 4379RD546460; 4379RD559761;. 1988 Mack CS250P Mid-Liner OE No. 4379RD546460; 4379RD559761;. 1989 Mack CS250P Mid-Liner OE No. 4379RD546460; 4379RD559761;.