View 4 Photos View 0 Videos Caterpillar C9 Electrical Parts for a Caterpillar C-9 Newly Listed $40 USD New Catgerpillar C-9/C13 24 volt air conditioner magnetic switch, Part number: 398-0940 ConditionNewFits To Make(s)CATERPILLARFits To Model(s)C-9Part Number398-0940Stock Number1069143 MLS Number14149348CategoryElectrical Misc. Parts Last Updated2/18/2026 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info