2 0 Paccar PX-9 Engine Part $100 USD Used takeout Paccar PX-9 Knox sensor with module. Part number: 4326873. Sold as is. No warranty. ConditionUsedFits To Make(s)PACCARPart Number4326873Stock NumberRyd 4326873 MLS Number13928143CategoryEngine Miscellaneous Parts Last Updated10/24/2025 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info