5 0 Cummins 5.9L Engine Control Module (ECM) for a Freightliner MT55 Chassis $199.99 USD (Used) Cummins 5.9L, ENGINE ECM- Part Number: P3944124, Serial Number: 0C03011498, Engine Information- Displacement: 5.9L, 2 Rectangular Plug with 50 Pins each!! Reference images for... ConditionUsedFits To Make(s)FreightlinerFits To Model(s)MT55 ChassisPart NumberP3944124Stock NumberP-80829 MLS Number12884444CategoryEngine Control Modules (ECM) Last Updated5/22/2024 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info