View 5 Photos View 0 Videos Cummins ISB 5.9L CM550 ECM ECU Computer OEM P3944124 Tested Part $349.99 USD ECM SPECIFICS Condition: GOOD - Tested with Warranty, Price USD: $349 (NO CORE), Make: CUMMINS DIESEL ENGINE, Part#: P3944124 CM550, Stock#: 324742 For more... Warranty ConditionUsedAssembly NumberP3944124Engine ModelISB 5.9L 24-Valve Inline 6 Turbocharged Diesel EngineFits To EquipmentCummins ISB 5.9L ECM Computer P3944124 CM550Fits To Make(s)Cummins ISB 5.9L CM550 ECM ECU Computer P3944124Fits To Model(s)ISB 5.9L 24-Valve Non-EGR P3944124Part NumberP3944124Stock Number324743 MLS Number13326956CategoryEngine Control Modules (ECM) Last Updated8/7/2026 LocationRockwood, TN, US Sold ByMachinery and Truck Parts (844) 835-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos (GOOD USED) Cummins Engine Control Module (ECM) for ISB 5.9L 24-Valve Non-EGR Part# 3944124, P3944124 $499.99 USD MACHINERY AND TRUCK PARTS ITEM DESCRIPTION, (TESTED PART) FITSCUMMINS ISB 5.9L 24-Valve Diesel Engine, NON-EGR Model DIESEL ENGINE, PART# 3944124,(PROGRAMMING MAY BE REQUIRED)INCLUDES... Warranty ConditionUsedEngine ModelISB 5.9L 24-Valve Inline 6 Turbocharged Diesel EngineFits To Make(s)CumminsFits To Model(s)ISB 5.9L 24-Valve Non-EGRPart Number3944124Stock Number321085 MLS Number12620805CategoryEngine Control Modules (ECM) Last Updated8/7/2026 LocationRockwood, TN, US Sold ByMachinery and Truck Parts (844) 835-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos (Tested Good) ECM Computer from Cummins CM550 ISB 5.9L 24valve Diesel Engine fits 98-03 P# P3944124 $499.99 USD ITEM DESCRIPTION, (TESTED PART) FITS CUMMINS ISB 5.9L 24-Valve Diesel Engine, NON-EGR Model DIESEL ENGINE, PART# P3944124, (PROGRAMMING MAY BE REQUIRED) INCLUDES WARRANTY. STOCK# 320326... Warranty Quantity5ConditionUsedAssembly Numberp3944124Engine ModelISB 5.9L 24-ValveFits To Make(s)CumminsFits To Model(s)ISB 5.9L 24-Valve Non-Egr CM550Will Fit Year(s)1998 1999 2000 2001 2002 2003Part NumberP3944124Stock Number320326 MLS Number11056330CategoryEngine Control Modules (ECM) Last Updated8/7/2026 LocationRockwood, TN, US Sold ByMachinery and Truck Parts (844) 835-___ SHOWNUMBERCall Seller Email Seller Save More Info