Shopping for: Confirm the part against your engine serial number and application before ordering.
Change engine
Cummins ISX15 / X15 / QSX Cooling System
Cooling System for Cummins ISX15 / X15 / QSX engines. Every part in this collection is listed for the ISX, ISX15, X15, QSX by its catalog application record, not by its title. Check your engine serial number or CPL against the part page before ordering.
36 part numbers. Match the part number and your engine serial number — not sure? Call or text (720) 445-6249.
| Part # | Replaces | Description | Fits | Price | Availability |
|---|---|---|---|---|---|
| 181796 | Cummins 4386527 | Cummins OIL THERMOSTAT | CUMMINS ISX SERIES CUMMINS QSL SERIES +1 more |
Call for price | Request lead time |
| 181929E | Cummins 3683562 Cummins 3684449 |
Cummins ISX SERIES WATER PUMP KIT | CUMMINS ISX SERIES | Call for price | Request lead time |
| 181989OEM | Cummins 3687044 Cummins RX5406044 Cummins RX6305091 +4 more |
Cummins ISX SERIES WATER PUMP ASSEMBLY | CUMMINS ISX SERIES | $1,555.16 | Ships from supplier · Lead time confirmed when you order |
| 181946OEM | — | Cummins ISX SERIES WATER PUMP KIT | CUMMINS ISX SERIES | $1,273.03 | Ships from supplier · Lead time confirmed when you order |
| 181933E | — | Cummins ISX SERIES WATER PUMP ASSEMBLY | CUMMINS ISX SERIES | $349.64 | Ships from supplier · Lead time confirmed when you order |
| 181879E | Cummins 4089158 Cummins 4089910 |
Cummins ISX SERIES WATER PUMP ASSEMBLY KIT | CUMMINS ISX SERIES | $314.88 | Ships from supplier · Lead time confirmed when you order |
| 181877E | Cummins 3800495 Cummins 4024845 Cummins 4025097 +1 more |
Cummins ISX SERIES WATER PUMP ASSEMBLY KIT | CUMMINS ISX SERIES | $285.10 | Ships from supplier · Lead time confirmed when you order |
| M-5719755 | Cummins 5719755 | Interstate-McBee Cummins ISX/QSX Water Pump | CUMMINS ISX/QSX | $683.99 | Sold out - call for options |
| M-5406048 | Cummins 5406048 | Interstate-McBee Cummins ISX/QSX Water Pump | CUMMINS ISX/QSX | $944.99 | Sold out - call for options |
| M-4952630 | Cummins 4952630 | Interstate-McBee Cummins ISX/QSX Oil Cooler Thermostat | CUMMINS ISX/QSX | $44.99 | Ships from supplier · Lead time confirmed when you order |
| M-4952629 | Cummins 4952629 | Interstate-McBee Thermostat for Cummins ISX / QSX - Replaces 4952629 | CUMMINS ISX/QSX | $81.99 | Ships from supplier · Lead time confirmed when you order |
| M-4336659 | Cummins 4336659 | Interstate-McBee Cummins ISX/QSX Thermostat | CUMMINS ISX/QSX | $57.99 | Ships from supplier · Lead time confirmed when you order |
| M-4318947 | Cummins 4318947 | Interstate-McBee Cummins ISX/QSX Thermostat | CUMMINS ISX/QSX | $48.99 | Ships from supplier · Lead time confirmed when you order |
| M-4089910 | Cummins 4089910 | Interstate-McBee Cummins ISX/QSX Water Pump | CUMMINS ISX/QSX | $456.99 | Sold out - call for options |
| M-4089909 | Cummins 4089909 | Interstate-McBee Cummins ISX/QSX Water Pump | CUMMINS ISX/QSX | $486.99 | Ships from supplier · Lead time confirmed when you order |
| M-4089908 | Cummins 4089908 | Interstate-McBee Cummins ISX/QSX Water Pump | CUMMINS ISX/QSX | $490.99 | Sold out - call for options |
| M-3687590 | Cummins 3687590 | Interstate-McBee Cummins ISX/QSX Water Pump | CUMMINS ISX/QSX | $777.99 | Sold out - call for options |
| M-3687130 | Cummins 3687130 | Interstate-McBee Water Pump for Cummins ISX / QSX - Replaces 3687130 | CUMMINS ISX/QSX | $507.99 | Ships from supplier · Lead time confirmed when you order |
| M-3687045 | Cummins 3687045 | Interstate-McBee Cummins ISX/QSX Water Pump Cartridge | CUMMINS ISX/QSX | $265.99 | Ships from supplier · Lead time confirmed when you order |
| M-3684450 | Cummins 3684450 | Interstate-McBee Cummins ISX/QSX Water Pump Cartridge | CUMMINS ISX/QSX | $265.99 | Ships from supplier · Lead time confirmed when you order |
| M-3684449 | Cummins 3684449 | Interstate-McBee Water Pump for Cummins ISX / QSX - Replaces 3684449 | CUMMINS ISX/QSX | $483.99 | Ships from supplier · Lead time confirmed when you order |
| M-3684336 | Cummins 3684336 | Interstate-McBee Cummins ISX/QSX Thermostat Housing Gasket | CUMMINS ISX/QSX | $15.99 | Ships from supplier · Lead time confirmed when you order |
| M-3682673 | Cummins 3682673 | Interstate-McBee Cummins ISX/QSX Thermostat Housing Cover Gasket | CUMMINS ISX/QSX | $20.99 | Ships from supplier · Lead time confirmed when you order |
| M-3680737 | Cummins 3680737 | Interstate-McBee Cummins ISX/QSX Water Pump Retainer Ring | CUMMINS ISX/QSX | $22.99 | Ships from supplier · Lead time confirmed when you order |
| M-3680602 | Cummins 3680602 | Interstate-McBee Cummins ISX/QSX Thermostat Housing Cover Gasket | CUMMINS ISX/QSX | $17.99 | Ships from supplier · Lead time confirmed when you order |
| M-3679751 | Cummins 3679751 | Interstate-McBee Water Pump Cover Seal for Cummins ISX / QSX - Replaces 3679751 | CUMMINS ISX/QSX | $4.99 | Ships from supplier · Lead time confirmed when you order |
| M-3104860 | Cummins 3104860 | Interstate-McBee Cummins ISX/QSX Fan Belt | CUMMINS ISX/QSX | $59.99 | Ships from supplier · Lead time confirmed when you order |
| M-2870249 | Cummins 2870249 | Interstate-McBee Cummins ISX/QSX Water Pump | CUMMINS ISX/QSX | $777.99 | Sold out - call for options |
| 131646 | Cummins 3680602 | Cummins Isx Series Housing Thermostat Gasket (Pack of 5) | CUMMINS ISX SERIES | $81.35 | Ships from supplier · Lead time confirmed when you order |
| 121071 | Cummins 4919970 | Cummins ISX/ISL Coolant Hose, PAI (OEM 4919970), Pack of 1 | CUMMINS ISX SERIES CUMMINS ISL SERIES |
$30.51 | Ships from supplier · Lead time confirmed when you order |
| 182011OEM | Cummins 4386673 Cummins 4318610 Cummins 3681594 +1 more |
Cummins CONNECTION,WATER FILTER | CUMMINS ISX SERIES CUMMINS QSX ENGINE |
$1,225.77 | Ships from supplier · Lead time confirmed when you order |
| 181925 | Cummins 3680453 Cummins 4952629 |
Cummins THERMOSTAT | CUMMINS ISX SERIES CUMMINS QSX ENGINE |
$57.70 | Ships from supplier · Lead time confirmed when you order |
| 181887 | Cummins 2882757 Cummins 3335549 Cummins 3335550 +4 more |
Cummins THERMOSTAT | CUMMINS N14 ENGINES CUMMINS L10 ENGINE +2 more |
$28.24 | Ships from supplier · Lead time confirmed when you order |
| 181832 | Cummins 3690535 | Cummins QSL/ISX Oil Cooler Thermostat, PAI (OEM 3690535), Pack of 1 | CUMMINS ISX SERIES CUMMINS QSL SERIES |
$89.31 | Ships from supplier · Lead time confirmed when you order |
| 181799 | Cummins 4318946 Cummins 2882752 Cummins 4003949 +3 more |
Cummins ISX SERIES THERMOSTAT | CUMMINS ISX SERIES | $21.60 | Ships from supplier · Lead time confirmed when you order |
| 180283 | Cummins 3691143 | Cummins ISX Water Tube, PAI (OEM 3691143), Pack of 1 | CUMMINS ISX SERIES | $86.82 | Ships from supplier · Lead time confirmed when you order |
Got a Number We Don't List?
Text a photo of the part tag — a specialist crosses it and quotes you fast.