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Cummins® Diesel, Natural Gas & Alternative Fuel Engines

Cummins® diesel, natural gas, and alternative fuel engines deliver the high torque and fuel-smart efficiency that today’s on-highway trucks and vocational rigs demand. Browse the models below—or explore our full Cummins® inventory—to power your fleet with proven reliability. Choose a model below or explore all Cummins® diesel, natural gas, and alternative fuel engines.

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Used 2012 CUMMINS ISB Complete Engine $12,500

USED 2012 CUMMINS ISB 6.7L ENGINE, FOR SALE 2012 CUMMINS ISB 6.7L S/N 58098957 CPL 3070 CM2250 220HP TESTED, INSPECTED, RUNNING TEST 6/3/25 - SOUNDS GREAT!!! WATCH VIDEO OF RUNNING ENIGNE FOR MORE INFORMATION PLEASE CALL 800-738-7802 O...
Stock ##S8957EN
EngineCummins ISB (220hp)
Eng Size6.7l
FamilyBcexh04088ah
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Used 2019 CUMMINS X15 565 Complete Engine $24,500

GOOD USED 2019 CUMMINS X15 DIESEL ENGINE ASSEMBLY, FOR SALE 2019 CUMMINS X15 CPL4343 565HP LOW MILES!!!! S/N 80168346 CM2350 TESTED, INSPECTED -RUN TEST 5/29/25 - RUNS EXCELLENT, WATCH VIDEO OF RUNNING ENGINE !!! SUPER CLEAN!!!! ECM...
Stock ##S8346EN
EngineCummins X15 (565hp)
FamilyKcexh0912xax
Pulled FromPeterbilt
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Used 2010 CUMMINS ISX15 Complete Engine $15,000

GOOD USED 2010 CUMMINS ISX15 DIESEL ENGINE FOR SALE 2010 CUMMINS ISX15 S/N 79429981 CPL 3490 CM2250 400HP TESTED, INSPECTED, RUN TEST 5/16/25 - RUNS GREAT!!! WATCH VIDEO OF RUNNING ENGINE!!! FOR MORE INFORMATION PLEASE CALL 800-738-7802...
Stock ##S9981EN
EngineCummins ISX15 (400hp)
Eng Size15l
CPL/AR3490
FamilyAcexh0912xap
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Used 2018 CUMMINS X15 Complete Engine $18,500

GOOD USED 2018 CUMMINS X15 DIESEL ENGINE FOR SALE 2018 CUMMINS X15 450 HP S/N 80025768 CPL4342 CM2350 352K MILES TESTED, INSPECTED RUN TEST 5/10/25 - WATCH VIDEO OF RUNNING ENGINE - SUPER CLEAN AND SOUNDS GREAT!! FOR MORE INFORMATION P...
Stock ##S5768EN
Mileage352,000
EngineCummins X15 (450hp)
Eng Size15l
CPL/AR4342
FamilyHcexh0912xaw

Used CUMMINS ISX15 Complete Engine $17,500

GOOD USED REBUILT CUMMINS ISX15 DIESEL ENGINE, COMES WITH WARRANTY!!! BUILD DATE 2015, EPA 10 CUMMINS ISX15 CPL3719 CM2250 450 HP S/N 60815628 TESTED, INSPECTED, RUN TEST - RUNS PERFECT, VERY CLEAN ENGINE - RUN TEST VIDEO AVAILABLE FOR M...
Stock ##S5628EN
EngineCummins ISX15 (450hp)
Eng Size14.9l
CPL/AR3719
FamilyCcexh0912xap

Used 2011 CUMMINS ISX15 Complete Engine $12,500

GOOD USED 2011 CUMMINS ISX15 DIESEL ENGINE ASSEMBLY, FOR SALE, WITH WARRANTY!!! 2011 CUMMINS ISX15 S/N 79492621 CM2250 450HP CPL3719 TESTED, INSPECTED, BEARINGS, CAM, CRANK, JAKES, INSPECTED- RUN 4/4/25 - VIDEO AVAILABLE FOR MORE INFORM...
Stock ##S2621EN
EngineCummins ISX15 (450hp)
Eng Size14.9l
CPL/AR3719
FamilyBcexh0912xa
Cummins X15 For Sale
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Used 2019 CUMMINS X15 Complete Engine $15,500

GOOD USED 2019 CUMMINS X15 DIESEL ENGINE ASSEMBLY FOR SALE, WITH WARRANTY!!! 2018* CUMMINS* X15* S/N 80113722* 450HP* CM2350* LOW MILES!!! 342K* TESTED, INSPECTED, RUN TEST 3/13/26 - VIDEO OF RUNNING ENGINE AVAILABLE FOR MORE INFORMATION PLE...
Stock ##S3722EN
Mileage342,000
EngineCummins X15 (450hp)
Eng Size15l
CPL/AR4342
FamilyJcexh0912xaw

Used 2014 CUMMINS ISB Complete Engine $12,500

GOOD USED 2013 CUMMINS ISB 6.7L DIESEL ENGINE ASSEMBLY, FOR SALE, WITH WARRANTY!!! 2013 CUMMINS ISB 6.7L CM2350 CPL3610 240HP S/N 58352384 TESTED, INSPECTED, RUN TEST - VIDEO OF RUNNING ENGINE AVAILABLE FOR MORE INFORMATION PLEASE CALL 800-...
Stock ##S2384EN
EngineCummins ISB (240hp)
Eng Size6.7l
CPL/AR3610
FamilyDcexh0408bap

Used 2016 CUMMINS ISX15 Complete Engine $15,000

GOOD USED 2016 CUMMINS ISX15 DIESEL ENGINE ASSEMBLY, FOR SALE, WITH WARRANTY!!! 2016 CUMMINS ISX15 CPL 4586 450HP CM2350 TESTED, INSPECTED, RUN TEST - VIDEO AVAILABLE FOR RUNING ENGINE ENGINE IS IN STOCK AND READY TO SHIP OR PICK UP TODAY!! ...
Stock ##S4804EN
EngineCummins ISX15 (450hp)
Eng Size15l
CPL/AR4586
FamilyGcexh0912xat
Pulled FromInternational

Used 2017 CUMMINS X15 Complete Engine $15,000

GOOD USED 2017 CUMMINS X15 DIESEL ENGINE ASSEMBLY, FOR SALE, WITH WARRANTY!!! 2017 CUMMINS X15 CM2350 450HP S/N 79978831 TESTED, INSPECTED, RUN TEST - RUNS PERFECT!!! VIDEO OF RUNNING ENGINE AVAILABLE FOR MORE INFORMATION PLEASE CALL 800-73...
Stock ##S8831EN
EngineCummins X15 (450hp)
Eng Size15l
CPL/AR4342
FamilyHcexh0912xaw
ISX12 FOR SALE
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Used 2015 CUMMINS ISX12 Complete Engine $22,500

GOOD USED 2015 CUMMINS ISX12 DIESEL ENGINE ASSEMBLY, FOR SALE, WITH WARRANTY!!! 2015 CUMMINS ISX12 CM2350 CPL 4589 350HP TESTED, INSPECTED, RUN TEST - VIDEO AVAILABLE - RUNS EXCELLENT FOR MORE INFORMATION PLEASE CALL 800-738-7802 OR VISIT ww...
Stock ##S180EN
EngineCummins ISX12 (350hp)
CPL/AR4589
FamilyFcexh0729xea

Used 2012 CUMMINS ISX12 Complete Engine $22,000

GOOD USED 2012 CUMMINS ISX12 DIESEL ENGINE ASSEMBLY FOR SALE WITH WARRANTY!!! 2012 CUMMINS ISX12 CPL3440 350HP CM2250 S/N 75016029 TESTED, INSPECTED, RUN TEST, CONTACT US DIRECTLY FOR VIDEO OF RUNNING ENGINE !!! FOR MORE INFORMATION PLEASE ...
Stock ##S6029EN
EngineCummins ISX12 (350hp)
Eng Size11.9l
CPL/AR3440
FamilyCcexh0729xaa

New 2019 CUMMINS ISX12 Complete Engine $35,000

NEW 2019 CUMMINS ISX12 DIESEL ENGINE ASSEMBLY, FOR SALE WITH WARRANTY!!! CUMMINS ISX12 EPA13 ENGINE NEW 0 MILES 0 HOURS ESN 75080579 CPL4892 CM2350 450HP IN STOCK AND READY TO SHIP OR PICK UP TODAY!!! FOR MORE INFORMATION PLEASE CALL 8...
Stock ##S0579EN
EngineCummins ISX12 (450hp)
Eng Size11.9l
CPL/AR4892
FamilyJcexh0729xae

New 2015 CUMMINS ISX12 Complete Engine $35,000

NEW 2015 CUMMINS ISX12 DIESEL ENGINE ASSEMBLY, FOR SALE WITH WARRANTY!!! CUMMINS ISX12 EPA13 ENGINE NEW 0 MILES 0 HOURS ESN 75037068 CPL4892 CM2350 450HP IN STOCK AND READY TO SHIP OR PICK UP TODAY!!! FOR MORE INFORMATION PLEASE CALL 8...
Stock ##S7068EN
EngineCummins ISX12 (450hp)
Eng Size11.9l
CPL/AR4892
FamilyJcexh0729xae
Pulled FromNew Never Installed

New 2021 CUMMINS X12 Complete Engine $36,000

NEW CUMMINS X12 DIESEL ENGINE ASSEMBLY, FOR SALE, WITH WARRANTY!!! **** NEW, 0 MILES, 0 HOURS!!! 2021 CUMMINS X12 CPL 5581 CM2450 500HP FOR MORE INFORMATION PLEASE CALL 800-738-7802 ENGINE IS IN STOCK AND READY TO PICK UP OR SHIP TODAY!!...
Stock ##S5178EN
EngineCummins X12 (500hp)
Eng Size11.8l
CPL/AR5581
FamilyMcexh0721xca

Used 2017 CUMMINS X15 Complete Engine $23,500

GOOD USED 2017 CUMMINS X15 DIESEL ENGINE ASSEMBLY FOR SALE WITH WARRANTY!!! 2017 CUMMINS X15 500HP CPL4342 CM2350 S/N 79986381 TESTED, INSPECTED, RUN TEST 9/11/24 RUNS EXCELLENT!!! WATCH VIDEO OF RUNNING ENGINE FOR MORE INFORMATION PLEASE CALL E...
Stock ##S85EN
EngineCummins X15 (500hp)
Eng Size14.9l
CPL/AR4342
FamilyHcexh0912xaw
Pulled FromPeterbilt

Used 1999 CUMMINS N14 Celect Plus Complete Engine Call For Price

GOOD USED 1999 / 2012 REBUILT CUMMINS N14 CELECT PLUS DIESEL ENGINE ASSEMBLY, FOR SALE WITH WARRANTY!! REBUILT 2012 CUMMINS N14 CELECT PLUS 525HP CPL2592 TESTED, INSPECTED, RUN TEST 8/26/24 -RUNS EXCELLENT WATCH VIDEO OF RUNNING ENGINE IN ...
Stock ##S106EN
EngineCummins N14 (525hp)
Eng Size14l
CPL/AR2592
FamilyD093643bx03

Used 2004 CUMMINS ISM Complete Engine $8,500

GOOD USED 2004 CUMMINS ISM DIESEL ENGINE ASSEMBLY, FOR SALE, WITH WARRANTY!!! 2004 CUMMINS ISM EGR MODEL CPL 8556 280HP TESTED, INSPECTED, RUN TESTED 8/13/24 WATCH VIDEO OF RUNNING ENGINE ENGINE IS READY TO SHIP OR PICK UP TODAY!!! FOR ...
Stock ##S8436EN
EngineCummins ISM (280hp)
Eng Size10.8l
CPL/AR8556
Family4cexh0661mau
Pulled FromVolvo

Used 2018 CUMMINS X15 Complete Engine Call For Price

GOOD USED 2018 CUMMINS X15 DIESEL ENGINE ASSEMBLY, FOR SALE, WITH WARRANTY!!! 2018 CUMMINS X15 505HP 505HP CM2350 CPL4343 TESTED, INSPECTED, RUN TESTED 8/7/24 RUNS EXCELLENT!!!! WATCH VIDEO OF RUNNING ENGINE!!! LIKE NEW!!! LOW MILES!!! ...
Stock ##S2813EN
EngineCummins X15 (505hp)
Eng Size14.9l
CPL/AR4343
FamilyHcexh0912xax
Pulled FromInternational

Used 2021 CUMMINS X15 Complete Engine Call For Price

GOOD USED 2021 CUMMINS X15 DIESEL ENGINE ASSEMBLY, FOR SALE, WITH WARRANTY! 2021 CUMMINS X15 CM2450 CPL5779 450HP TESTED, INSPECTED, RUN TEST 8/1/24, RUNS EXCELLENT, LIKE NEW, LOW MILES!!! WATCH VIDEO OF RUNNING ENGINE IN STOCK AND READY...
Stock ##S7355EN
EngineCummins X15 (450hp)
Eng Size14.9l
CPL/AR5779
FamilyMcexh0912xca
Pulled FromKenworth