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SKU:
NLT1G03065
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Cummins ISB6.7 190°F Thermostat and Seal 5292712
$37.99
In Stock
$37.99
Sale price
$37.99
Regular price
This new aftermarket 190°F engine coolant thermostat with sealing ring replaces Cummins 5292712, 4929644, 3974371, and 4929643 for compatible ISB6.7 and QSB engine applications.
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- Cummins ISB6.7 diesel engines (commonly 2007-2017 applications; verify CPL)
- Cummins QSB6.7 and QSB4.5 applications using 5292712
- Dodge / Ram and medium-duty vehicles with a matching Cummins engine and thermostat housing
Product Overview
An engine that takes too long to warm up, runs cooler than commanded, loses cab heat, or cycles hot may have a thermostat stuck open or closed. Coolant level, fan operation, radiator flow, water pump, sensors, and combustion-gas intrusion should be checked before replacement.
The thermostat regulates coolant flow as the engine warms. The 190°F rating must match the engine calibration and housing; a lower or higher temperature part is not an automatic upgrade.
Match the engine CPL or serial number, thermostat diameter and depth, opening rating, seal, housing, and original reference. Some B-series engines use different thermostats despite similar appearance.
Key Features & Performance
- 190°F regulated opening temperature
- Includes the matching seal shown
- Cross-references multiple Cummins service numbers
- Direct thermostat element for compatible housings
Replaces Part Numbers
- 5292712
- 4929644
- 3974371
- 4929643
- 3954830
- 5292711
- 5627589
Common Uses
- Correcting an engine that stays too cold
- Repairing overheating caused by a confirmed stuck thermostat
- Replacing the thermostat during cooling-system service
Technical Specifications
- Product Type: Engine coolant thermostat with seal
- Opening Temperature: 190°F
- Engine Families: Compatible Cummins ISB / QSB
- Condition: New aftermarket replacement
Installation & Fitment
- Allow the engine to cool completely
- Drain coolant below the housing level
- Inspect the housing, sensor, and old seal
- Install the jiggle valve or bleed feature in the specified position
- Refill with approved coolant, purge air, and verify operating temperature
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application that is not shown above. Model year, production date, serial number, engine or equipment specification, installed options, and previous repairs can change fitment. Match the original part, reference number, dimensions, connectors, mounting points, and product photos before purchase.
Frequently Asked Questions
Q: Can a stuck thermostat cause overheating? A: Yes, but fan, radiator, water pump, coolant level, cap, and engine problems can also cause overheating.
Q: Is this for every 6.7L Cummins? A: No. Verify engine serial number, CPL, housing, temperature rating, and part number.
Q: Does the sealing ring come with it? A: The listing is for the thermostat and O-ring shown; compare package contents before installation.
Q: Is this an original-equipment part? A: No. This is a new aftermarket product. Brand names and part numbers are used only to identify compatible applications.
Part Summary
keywords: Cummins 5292712 thermostat, ISB6.7 190 degree thermostat, 4929644 replacement, 3974371 coolant thermostat, 6.7 Cummins runs cold repair
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, specifications, and application before purchase.