5 0 2007 Cummins ISB Engine Control Module (ECM) for a Freightliner MT45 Chassis $750 USD ISB CM850 ECM, 4921776RX, 4921776, All ECM's sold with a 30 day “parts only†warranty. In the event of failure, the ECM will be replaced or a refund will be issued. Warranty does... ConditionUsedFits To Make(s)FREIGHTLINERFits To Model(s)MT45 ChassisStock NumberUPS-666441-26 MLS Number13888137CategoryEngine Control Modules (ECM) Last Updated10/30/2025 LocationFresno, CA, US Sold ByGarabedian Equipment (855) 794-___ SHOWNUMBERCall Seller Email Seller Save More Info