76℃ 168.8℉ Thermostat 5337966 w/ O-Ring Seal Fit for 98.5-02 Cummins 5.9 24V ISB
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Compatible Models
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Thermostat 5337966 with O-Ring Seal for Cummins
This thermostat with O-Ring Seal is a cooling system component designed for 1998.5-2002 Cummins 5.9L 24V ISB diesel engines. It opens at 76℃ (168.8℉) to regulate engine temperature and matches the OEM part number 5337966 for dependable heat management.
Overview
This 76℃ 168.8℉ thermostat 5337966 maintains optimal operating temperature in compatible Cummins engines, ensuring efficient combustion and reduced wear. The included O-ring seal provides a proper gasket between the thermostat and housing. This part is a direct replacement for the original style used on 24-valve ISB motors.
Built For Performance
- Accurate 76℃ (168.8℉) opening temperature for proper warm-up
- Includes matching O-ring seal for a secure fit
- Corrosion-resistant construction for long service life
- Precision valving for consistent coolant flow
- Meets OEM specifications for 5337966
Fits These Machines
- for Cummins 5.9L 24V ISB (1998.5-2002)
On-The-Job Use
- Used in Dodge Ram trucks equipped with 5.9L 24V Cummins diesel
- For cooling system repair after overheating or temperature fluctuation
- Suitable for replacement during water pump or cooling system service
Specs At A Glance
| Part Number(s) | 5337966 |
| Opening Temperature | 76℃ / 168.8℉ |
| Included | O-Ring Seal |
| Engine Fitment | Cummins 5.9L 24V ISB (98.5-02) |
Good To Know
Q: Why is the thermostat opening temperature important? A: The thermostat ensures the engine reaches and maintains optimal operating temperature, which improves fuel efficiency and reduces emissions. A thermostat that opens too early or late can cause poor performance.
Q: Does this thermostat come with everything needed for installation? A: The package includes the thermostat and the required O-ring seal. You will need to drain some coolant and access the thermostat housing to complete the replacement.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.