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Cummins QSB Engine Parts For Sale

Shop new and used Cummins QSB Engine Parts on MyLittleSalesman.com . Compare active listings with prices from $6 to $1,500. Sellers include JJ Rebuilders, Frontier Truck Parts, LKQ Heavy Truck, and more. Filter by condition, price, or year to find the Cummins QSB Engine Part that fits your job.
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Truck Parts (67)
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Engine Parts (67)
   Engine Brackets (1)    Engine Control Modules (ECM) (50)    Engine Miscellaneous Parts (2)    Engine Mounts (1)    Engine Overhaul Kits (6)    Engine Pulleys (1)    Engine Rods (1)    Engine Valve Trains (1)    Engine Wiring Harnesses (1)    Timing Covers (1)    Valve Covers (2)
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Showing 1 - 25 of 67 Engine Part Listings

1 - 25 of 67 listings
1 - 25 of 67 listings
Cummins QSB 3.3 Engine Control Module (ECM)

Cummins QSB 3.3 Engine Control Module (ECM)

$1,000 USD
(GOOD USED/ TESTED) Cummins QSB3.3 Diesel Engine Control Module, ECM, ECU, for sale!!! Part #: 4993120; Supersession Part #: 4993121; Service Model Name: CM2250; Stock #: E4437 For more...
ConditionUsed
Part Number4993120
Stock NumberE4437
MLS Number14149957
CategoryEngine Control Modules (ECM)
Last Updated2/18/2026
Location
Hialeah, FL, US
Sold By
JJ Rebuilders Inc.
(844) 385-___  SHOW
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JJ Rebuilders Inc.
2018 Cummins QSB 4.5 Engine Control Module (ECM)

2018 Cummins QSB 4.5 Engine Control Module (ECM)

$750 USD
(GOOD USED/ TESTED) Cummins OEM QSB 4.5 Diesel Engine Control Module, ECM, ECM, for sale!!!!! P/N: 4921776; Supersession Part #: 4921797; Service Model Name: CM850; Stock #: E4432 For more...
ConditionUsed
Part Number4921776
Stock NumberE4432
MLS Number14148078
CategoryEngine Control Modules (ECM)
Last Updated2/18/2026
Location
Hialeah, FL, US
Sold By
JJ Rebuilders Inc.
(844) 385-___  SHOW
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JJ Rebuilders Inc.
Cummins QSB4.5 Diesel Engine Control Module ECM ECU 4921776 4921797 CM850

2011 Cummins QSB4.5 Diesel Engine Control Module ECM ECU 4921776 4921797 CM850

$750 USD
(GOOD USED/ TESTED) OEM Cummins QSB4.5Diesel Engine Control Module, ECM, ECU, for sale!!!!! P/N: 4921776; Supersession Part #: 4921797; Service Model Name: CM850; Stock #: E4366 For more...
ConditionUsed
Part Number4921776
Stock NumberE4366
MLS Number14010214
CategoryEngine Control Modules (ECM)
Last Updated12/3/2025
Location
Hialeah, FL, US
Sold By
JJ Rebuilders Inc.
(844) 385-___  SHOW
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JJ Rebuilders Inc.
2016 Cummins QSB 4.5 Engine Control Module (ECM)

2016 Cummins QSB 4.5 Engine Control Module (ECM)

$1,000 USD
(GOOD USED/ TESTED) Cummins QSB4.5 OEM Diesel Engine Control Module, ECM, ECU, for sale!!!!!Part #'s: 4993120, Supersession Part #: 4993121; Service Model Name: CM2250; Stock #: E4363 For...
ConditionUsed
Part Number4993120
Stock NumberE4363
MLS Number14008169
CategoryEngine Control Modules (ECM)
Last Updated12/2/2025
Location
Hialeah, FL, US
Sold By
JJ Rebuilders Inc.
(844) 385-___  SHOW
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JJ Rebuilders Inc.
Cummins QSB 6.7 Diesel Engine Fan Support Part # 3958412

Cummins QSB 6.7 Diesel Engine Fan Support Part # 3958412

Contact for price
(GOOD USED/TESTED) Cummins QSB6.7 Diesel Fan Support 3958412 For Sale, Part # 3958412, Other Part # 27E6, 8806, 7M Stock # 5126 | Tested Inspected! All ourPARTSareTESTEDand ShipPRIORITY...
ConditionUsed
Part Number39584112
Stock Number5126
MLS Number12188366
CategoryEngine Miscellaneous Parts
Last Updated11/12/2025
Location
Opa Locka, FL, US
Sold By
CA Truck Parts Inc.
(305) 688-___  SHOW
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CA Truck Parts Inc.
Cummins QSB4.5L Engine Control Module ECM ECU 4921776 CM850 CM2850

2007 Cummins QSB4.5L Engine Control Module ECM ECU 4921776 CM850 CM2850

$750 USD
(GOOD USED/ TESTED) Cummins QSB4.5 OEM Diesel Engine Control Module, ECM, ECU, for sale!!! Part #: 4921776; Service Model Name: CM850(CM2850); Stock #: E4321 For more information about this...
ConditionUsed
Part Number4921776
Stock NumberE4321
MLS Number13929548
CategoryEngine Control Modules (ECM)
Last Updated10/28/2025
Location
Hialeah, FL, US
Sold By
JJ Rebuilders Inc.
(844) 385-___  SHOW
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JJ Rebuilders Inc.
Cummins QSB Computer Module ECM ECU 4993120 4993121 CM2250

Cummins QSB Computer Module ECM ECU 4993120 4993121 CM2250

$1,000 USD
(GOOD USED/ TESTED) Cummins QSB OEM Diesel Engine Control Module, ECM, ECU Part #: 4993120;Supersession Part #: 4993121;Service Model Name: CM2250 ;Stock #: E4260 For more information about...
ConditionUsed
Part Number4993120
Stock NumberE4260
MLS Number13790042
CategoryEngine Control Modules (ECM)
Last Updated9/2/2025
Location
Hialeah, FL, US
Sold By
JJ Rebuilders Inc.
(844) 385-___  SHOW
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JJ Rebuilders Inc.
2007 Cummins QSB 6.7 Engine Control Module (ECM) for 2007-2009 Part # 4921776, CM850

2007 Cummins QSB 6.7 Engine Control Module (ECM) for 2007-2009 Part # 4921776, CM850

$695 USD
(GOOD USED BENCH TESTED w/WARRANTY) 2007 Cummins QSB 6.7L Engine Control Module (ECM) CM850 4921776 For Sale, CM850, 160HP @ 2200RPM, Off 2007 Cummins QSB6.7L w/ Engine Serial# 46788929 ...
ConditionUsed
Will Fit Year(s)2007-2009
Part Number4921776
Stock Number9469
MLS Number13762519
CategoryEngine Control Modules (ECM)
Last Updated8/15/2025
Location
Opa Locka, FL, US
Sold By
CA Truck Parts Inc.
(305) 688-___  SHOW
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CA Truck Parts Inc.
2006 Cummins QSB-155C Engine Control Module (ECM) for 2004-2006 Part # 3990517, CM550

2006 Cummins QSB-155C Engine Control Module (ECM) for 2004-2006 Part # 3990517, CM550

$600 USD
(GOOD USED BENCH TESTED W/ WARRANTY) 2006 Cummins QSB5.9 CM550 Engine Control Module (ECM) 3990517 For Sale, NON-EGR Model, CM550, Part # 3990517, ECM Code J91703.07, CPL 8300, 155HP @ 2600...
ConditionUsed
Will Fit Year(s)2004-2006
Part Number3990517
Stock Number9352
MLS Number13740263
CategoryEngine Control Modules (ECM)
Last Updated8/4/2025
Location
Opa Locka, FL, US
Sold By
CA Truck Parts Inc.
(305) 688-___  SHOW
NUMBERCall Seller
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CA Truck Parts Inc.
Cummins QSB 4.5 Engine Control Module (ECM)

Cummins QSB 4.5 Engine Control Module (ECM)

$750 USD
(GOOD USED/ TESTED) OEM Cummins QSB4.5 Diesel Engine Control Module, ECM, ECU, Part #: 4921776; Supersession Part #: 4921797; Service Model Name: CM850; Stock #: E4204 For more information...
ConditionUsed
Part Number4921776
Stock NumberE4204
MLS Number13662480
CategoryEngine Control Modules (ECM)
Last Updated6/25/2025
Location
Hialeah, FL, US
Sold By
JJ Rebuilders Inc.
(844) 385-___  SHOW
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JJ Rebuilders Inc.
2013 Cummins QSB 6.7 Engine Control Module, ECM, ECM 4993120, 4993121, CM2250

2013 Cummins QSB 6.7 Engine Control Module, ECM, ECM 4993120, 4993121, CM2250

$1,000 USD
(GOOD USED/TESTED) 2013 Cummins QSB 6.7L Diesel Engine Control Module, ECM, ECM, for sale!!!!P/N: 4993120, Supersession Part #: 4993121; Service Model Name: QSB6.7 CM2250; Stock #: E4176 For...
ConditionUsed
Part Number4993120
Stock NumberE4176
MLS Number13612691
CategoryEngine Control Modules (ECM)
Last Updated5/30/2025
Location
Hialeah, FL, US
Sold By
JJ Rebuilders Inc.
(844) 385-___  SHOW
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JJ Rebuilders Inc.
2011 Cummins QSB Engine Control Module (ECM)

2011 Cummins QSB Engine Control Module (ECM)

$750 USD
(GOOD USED/ TESTED) Cummins OEM QSB 4.5 Diesel Engine Control Module, ECM, ECU OEM, for sale!!!!! P/N: 4921776; Supersession Part #: 4921797; Service Model Name: CM850; Stock #: E4117 For...
ConditionUsed
Part Number4921776
Stock NumberE4117
MLS Number13497988
CategoryEngine Control Modules (ECM)
Last Updated4/7/2025
Location
Hialeah, FL, US
Sold By
JJ Rebuilders Inc.
(844) 385-___  SHOW
NUMBERCall Seller
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JJ Rebuilders Inc.
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