Product Description
Cummins 3928499 OEM 180 Degree Coolant Thermostat – Ram 5.9L 12V (1994–1998)
The Cummins 3928499 OEM 180 Degree Coolant Thermostat is a genuine Cummins replacement thermostat engineered specifically for 1994–1998 Dodge Ram trucks equipped with the legendary 5.9L 12-Valve Cummins diesel engine. Designed to maintain proper engine operating temperature, this OEM thermostat helps ensure efficient cooling system performance, improved engine longevity, and consistent operating temperatures under towing, daily driving, and heavy-duty workloads.
Unlike aftermarket alternatives, the genuine Cummins 3928499 thermostat is manufactured to meet factory specifications for fit, performance, and durability. Maintaining proper coolant temperature is critical for fuel efficiency, engine protection, heater performance, and overall cooling system reliability.
Features
- Genuine Cummins OEM replacement thermostat
- 180-degree opening temperature
- Direct replacement for factory thermostat
- Helps maintain proper engine operating temperature
- Supports cooling system efficiency and reliability
- Designed to Cummins factory specifications
- Improves temperature control under towing and heavy loads
- Helps reduce excessive engine temperature fluctuations
- Durable construction for long service life
- Ideal for maintenance, repair, or restoration projects
Fitment
- 1994 Dodge Ram 2500 5.9L Cummins 12-Valve
- 1995 Dodge Ram 2500 5.9L Cummins 12-Valve
- 1996 Dodge Ram 2500 5.9L Cummins 12-Valve
- 1997 Dodge Ram 2500 5.9L Cummins 12-Valve
- 1998 Dodge Ram 2500 5.9L Cummins 12-Valve
- 1994 Dodge Ram 3500 5.9L Cummins 12-Valve
- 1995 Dodge Ram 3500 5.9L Cummins 12-Valve
- 1996 Dodge Ram 3500 5.9L Cummins 12-Valve
- 1997 Dodge Ram 3500 5.9L Cummins 12-Valve
- 1998 Dodge Ram 3500 5.9L Cummins 12-Valve
Note: Always inspect the thermostat housing, gasket surfaces, coolant condition, and cooling system components during installation. New thermostat gaskets or seals are recommended when servicing the cooling system.
What's Included
- Cummins 3928499 OEM 180 Degree Thermostat
Specifications
- Manufacturer: Cummins
- Part Number: 3928499
- Product Type: Engine Coolant Thermostat
- Opening Temperature: 180 Degrees Fahrenheit
- Engine Compatibility: Cummins 5.9L 12-Valve Diesel
- Model Years: 1994–1998
- OEM Replacement: Yes
- Installation Location: Thermostat Housing
- Fuel Type: Diesel
- Application: Cooling System Maintenance and Repair
- Fitment: Dodge Ram 2500 and 3500 Models
Cross Reference Numbers
3928499, Cummins 3928499, 180 Degree Cummins Thermostat, 5.9 Cummins Thermostat, 12 Valve Thermostat, Dodge Ram Cummins Thermostat
FAQ
What temperature does the Cummins 3928499 thermostat open?
This thermostat is designed to begin opening at approximately 180 degrees Fahrenheit to maintain proper engine operating temperature.
Will this fit my 1997 Dodge Ram 2500 Cummins?
Yes. The Cummins 3928499 thermostat is designed for 1994–1998 Dodge Ram 2500 and 3500 trucks equipped with the 5.9L 12-Valve Cummins diesel engine.
Why should I use a genuine Cummins thermostat?
Genuine Cummins components are manufactured to OEM specifications for proper fit, temperature control, reliability, and long-term durability.
What are the signs of a failing thermostat?
Common symptoms include engine overheating, slow warm-up times, fluctuating coolant temperatures, poor heater performance, and inconsistent operating temperatures.
Should I replace the thermostat gasket during installation?
Yes. Replacing the gasket or sealing components during thermostat service helps ensure a leak-free installation and reliable cooling system operation.
Is this thermostat suitable for towing applications?
Yes. Maintaining proper engine temperature is especially important for towing, hauling, and heavy-duty use, making a properly functioning thermostat essential.
