Part Type: HVAC Pressure Switch. 1998 Mack CX OE No. 4379RD4191;. 1999 Mack CX OE No. 4379RD4191;. 2000 Mack CX OE No. 4379RD4191;. 2001 Mack CX OE No. 4379RD4191;. Switch, Pressure Switch. Pressure Switch.
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