5 0 (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 Updated7/10/2023 LocationRockwood, TN, US Sold ByMachinery and Truck Parts (844) 835-___ SHOWNUMBERCall Seller Email Seller Save More Info
7 0 Cummins ISB 5.9L Engine Control Module (ECM) Contact for price (Core) 2005 Cummins ISB 5.9, ECM- Part Number: 4921776 Serial Number: 26018710 E/C: Z90030.18 Engine: ISB 5.9 Displacement: 5.9L Horsepower: 215 CPL: 8136 ESN: 46510387 For more information... ConditionUsedPart Number4921776Stock NumberP-51523 MLS Number12142818CategoryEngine Control Modules (ECM) Last Updated7/7/2023 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info
5 0 Cummins ISB 3923178 Air Transfer Elbow Tube $50 USD (GOOD USED) Cummins ISB 3923178 Air Transfer Elbow Tube For Sale, Intake Elbow off a Cummins ISB 5.9L Engine, Elbow shape, 3923178, Part# 3923178, Stock # 4624 All our PARTS are TESTED and... ConditionUsedPart Number3923178Stock Number4624 MLS Number12094419CategoryEngine Miscellaneous Parts Last Updated5/31/2023 LocationOpa Locka, FL, US Sold ByCA Truck Parts Inc. (305) 688-___ SHOWNUMBERCall Seller Email Seller Save More Info
1 0 Reconditioned Cummins ISB 5.9L Crankshaft $895 USD Reconditioned ISB 5.9L Crankshaft ConditionRemanufacturedPart Number3941199Stock Number508-12012 MLS Number11978778CategoryCrankshafts Last Updated6/14/2025 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
3 0 Cummins ISB 5.9L Camshaft $625 USD Nous livrons partout au Canada et États-Unis. We ship anywhere in Canada USA. - Stock : 2567CA - P/N : 3942567, Serial#: Other ConditionUsedStock Number2567CA MLS Number11945965CategoryCamshafts Last Updated3/18/2023 LocationBeauceville, QC, Canada Sold ByCamions Gilbert (888) 595-___ SHOWNUMBERCall Seller Email Seller Save More Info
3 0 Used Cummins ISB 5.9L Exhaust Rocker $27 USD Used ISB 5.9L Exhaust Rocker, Type: exhust rockers ConditionUsedFits To Make(s)CumminsFits To Model(s)ISB 5.9L EGRPart Number3941928Stock Number525-15422 MLS Number11925603CategoryEngine Valve Trains Last Updated4/19/2023 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
4 0 Cummins ISB 5.9L 24-Valve Diesel Engine Connecting Rod Part# 3971210 $74.99 USD PART SPECIFICS, Price USD: $74.99 (SOLD INDIVIDUALLY), Make: CUMMINS ISB 5.9L 24-VALVE DIESEL ENGINE, Model: CONNECTING ROD, Part#: 3971210, Stock#: 321466,... Warranty Quantity3ConditionUsedPart Number3971210Stock Number321466 MLS Number11858661CategoryEngine Rods Last Updated2/2/2023 LocationRockwood, TN, US Sold ByMachinery and Truck Parts (844) 835-___ SHOWNUMBERCall Seller Email Seller Save More Info
5 0 Cummins ISB 5.9L Engine Control Module (ECM) $675 USD Cummins ISB ECM - P?N 3944124; Good Takeoff 5.9 Diesel Engine PCM 3009586 J9077. Call or message with any questions or visit our website. ConditionUsedPart Number3944124Stock Number3034 MLS Number11518008CategoryEngine Control Modules (ECM) Last Updated12/1/2022 LocationSpringville, PA, US Sold BySummit Core Supply (844) 329-___ SHOWNUMBERCall Seller Email Seller Save More Info
2 0 Used Cummins ISB 5.9L Rear Main Seal Housing $67 USD Used ISB 5.9L Rear Main Seal Housing, Type: Rear Main Seal Cover ConditionUsedFits To Make(s)CumminsFits To Model(s)ISB 5.9LPart Number3921043Stock Number507-17991 MLS Number11673891CategoryEngine Covers Last Updated4/19/2023 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
6 0 Cummins ISB 5.9L Engine Control Module (ECM) for EPA04 $750 USD (GOOD USED/ TESTED) Cummins ISB, EPA04, Diesel Engine Control Module, ECM, ECU, for sale!!!!Part #: 4921776; Service Model Name: CM850; Stock #: E2920 For more information about this listing... ConditionUsedFits To Model(s)EPA04Part Number4921776Stock NumberE2920 MLS Number11577026CategoryEngine Control Modules (ECM) Last Updated9/2/2022 LocationHialeah, FL, US Sold ByJJ Rebuilders Inc. (844) 385-___ SHOWNUMBERCall Seller Email Seller Save More Info
4 0 Cummins ISB 5.9L Engine Control Module (ECM) for CM850 Being Dismantled (Parts Available) $200 USD (CORE/ FOR PARTS OR NOT IN WORKING CONDITION) Cummins ISB 5.9L Engine Control Module, ECM, ECU, for sale!!!!! Part #: 4921776; Service Model Name: CM850; Stock #: E2849 For more information... ConditionDismantledFits To Model(s)CM850Part Number4921776Stock NumberE2849 MLS Number11492321CategoryEngine Control Modules (ECM) Last Updated7/14/2022 LocationHialeah, FL, US Sold ByJJ Rebuilders Inc. (844) 385-___ SHOWNUMBERCall Seller Email Seller Save More Info
2 0 Used Cummins ISB 5.9L EGR EGR Cooler Assembly $350 USD Used ISB 5.9L EGR EGR Cooler Assembly, Type: EGR Cooler Assembly ConditionUsedFits To Make(s)CumminsFits To Model(s)ISB 5.9L EGRPart Number4337538Stock Number505-11747 MLS Number11415581CategoryEGR Coolers Last Updated11/16/2023 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
4 0 2006 Cummins ISB 5.9L Engine Control Module (ECM) Part # 4921776 for 2004 2005 2006 ISB EGR-Model CM850 Diesel Engines $695 USD (GOOD USED) 2006 Cummins ISB ECM Part # 4921776, CM850, EGR-Model, CPL 8136, 2004-2006 Compatible, 200 HP, Pulled off Cummins ISB 5.9L Engine, Stock # 3480 | Tested Inspected! All... ConditionUsedCPL/ARR8136Fits To EquipmentDiesel EnginesFits To Make(s)CumminsFits To Model(s)ISB EGR-Model CM850Will Fit Year(s)2004 2005 2006Part Number4921776Stock Number3480 MLS Number11355918CategoryEngine Control Modules (ECM) Last Updated4/21/2022 LocationOpa Locka, FL, US Sold ByCA Truck Parts Inc. (305) 688-___ SHOWNUMBERCall Seller Email Seller Save More Info
1 0 Reconditioned Cummins ISB 5.9L Crankshaft $895 USD Reconditioned ISB 5.9L Crankshaft ConditionRemanufacturedPart Number3941199Stock Number508-12013 MLS Number11291925CategoryCrankshafts Last Updated6/14/2025 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
1 0 Used Cummins ISB 5.9L Crankshaft**NEEDS TO BE GROUND** $550 USD Used ISB 5.9L Crankshaft**NEEDS TO BE GROUND** ConditionUsedPart Number3941199Stock Number508-12010 MLS Number11287381CategoryCrankshafts Last Updated6/14/2025 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
6 0 Used Cummins ISB 5.9L Vibration Damper $81 USD Used ISB 5.9L Vibration Damper, Type: Crankshaft Balancer, Diameter: Serpentine ConditionUsedPart Number3958258Stock Number579-10409 MLS Number10075855CategoryEngine Pulleys Last Updated4/19/2023 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
2 0 New Aftermarket Cummins ISB 5.9L Out of Frame Overhaul Kit 1.00MM Oversized Contact for price New Aftermarket ISB 5.9L Out of Frame Overhaul Kit 1.00MM Oversized, Type: Out of Frame Overhaul Kit 1.00MM Oversized ConditionUsedPart NumberOH4089186RGTStock Number537-10463 MLS Number10613902CategoryEngine Overhaul Kits Last Updated2/23/2023 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
2 0 New Aftermarket Cummins ISB 5.9L Out of Frame Overhaul Kit 1.00MM Oversized Contact for price New Aftermarket ISB 5.9L Out of Frame Overhaul Kit 1.00MM Oversized, Type: Out of Frame Overhaul Kit 1.00MM Oversized ConditionUsedPart NumberOH4089977RGTStock Number537-10462 MLS Number10613901CategoryEngine Overhaul Kits Last Updated2/23/2023 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
2 0 New Aftermarket Cummins ISB 5.9L Out of Frame Overhaul Kit 1.00MM Oversized Contact for price New Aftermarket ISB 5.9L Out of Frame Overhaul Kit 1.00MM Oversized, Type: Out of Frame Overhaul Kit 1.00MM Oversized ConditionUsedPart NumberOH4089186Stock Number537-10461 MLS Number10613900CategoryEngine Overhaul Kits Last Updated2/23/2023 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
2 0 New Aftermarket Cummins ISB 5.9L Out of Frame Overhaul Kit 1.00MM Oversized Contact for price New Aftermarket ISB 5.9L Out of Frame Overhaul Kit 1.00MM Oversized, Type: Out of Frame Overhaul Kit 1.00MM Oversized ConditionUsedPart NumberOH4089977Stock Number537-10460 MLS Number10613899CategoryEngine Overhaul Kits Last Updated2/23/2023 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
2 0 New Aftermarket Cummins ISB 5.9L Out of Frame Overhaul Kit 1.00MM Oversized Contact for price New Aftermarket ISB 5.9L Out of Frame Overhaul Kit 1.00MM Oversized, Type: Out of Frame Overhaul Kit 1.00MM Oversized ConditionUsedPart NumberOH4089671Stock Number537-10459 MLS Number10613898CategoryEngine Overhaul Kits Last Updated2/23/2023 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
2 0 New Aftermarket Cummins ISB 5.9L Out of Frame Overhaul Kit .50MM Oversized Contact for price New Aftermarket ISB 5.9L Out of Frame Overhaul Kit .50MM Oversized, Type: Out of Frame Overhaul Kit .50MM Oversized ConditionUsedPart NumberOH4089185RGTStock Number537-10457 MLS Number10613897CategoryEngine Overhaul Kits Last Updated2/23/2023 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
2 0 New Aftermarket Cummins ISB 5.9L Out of Frame Overhaul Kit .50MM Oversized Contact for price New Aftermarket ISB 5.9L Out of Frame Overhaul Kit .50MM Oversized, Type: Out of Frame Overhaul Kit .50MM Oversized ConditionUsedPart NumberOH4089976RGTStock Number537-10456 MLS Number10613896CategoryEngine Overhaul Kits Last Updated2/23/2023 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
2 0 New Aftermarket Cummins ISB 5.9L Out of Frame Overhaul Kit .50MM Oversized Contact for price New Aftermarket ISB 5.9L Out of Frame Overhaul Kit .50MM Oversized, Type: Out of Frame Overhaul Kit .50MM Oversized ConditionUsedPart NumberOH4089185Stock Number537-10455 MLS Number10613895CategoryEngine Overhaul Kits Last Updated2/23/2023 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
2 0 New Aftermarket Cummins ISB 5.9L Out of Frame Overhaul Kit .50MM Oversized Contact for price New Aftermarket ISB 5.9L Out of Frame Overhaul Kit .50MM Oversized, Type: Out of Frame Overhaul Kit .50MM Oversized ConditionUsedPart NumberOH4089976Stock Number537-10454 MLS Number10613894CategoryEngine Overhaul Kits Last Updated2/23/2023 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info