4 Seasons HVAC Pressure Switch For 1988-1991 Mack CM

1988 Mack CM OE No. 4379RD546460; 4379RD559761;. 1989 Mack CM OE No. 4379RD546460; 4379RD559761;. 1991 Mack CM OE No. 4379RD546460; 4379RD559761; OE No. 4379RD559760; 4379RD559761;. 1990 Mack CM OE No. 4379RD546460; 4379RD559761; OE No. 4379RD559760; 4379RD559761;.