Product Description
Cummins 3925466 OEM Thermostat Gasket (Rectangular Ring Seal) – 5.9L 12-Valve 1994-1998
The Cummins 3925466 OEM Thermostat Gasket is a genuine replacement rectangular ring seal designed for the thermostat housing on 1994-1998 Cummins 5.9L 12-valve diesel engines. This OEM gasket provides a reliable seal between the thermostat and housing, helping prevent coolant leaks while maintaining proper cooling system performance.
Manufactured to Cummins OEM specifications, the 3925466 thermostat gasket is the preferred choice when replacing a thermostat or servicing the cooling system on Dodge Ram trucks equipped with the legendary 5.9L 12-valve Cummins engine. Replacing the gasket during thermostat service helps ensure proper sealing and long-term reliability.
Features
- Genuine Cummins OEM replacement gasket
- Direct-fit rectangular ring seal design
- Designed for thermostat housing applications
- Helps prevent coolant leaks
- Maintains proper cooling system sealing
- Manufactured to OEM specifications
- Recommended during thermostat replacement
- Durable construction for long service life
- Simple installation
- Trusted Cummins factory quality
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 and mating surfaces during installation. Replacement of the thermostat is recommended when servicing the cooling system if wear or age is present.
What's Included
- One Cummins 3925466 OEM Thermostat Gasket
- Rectangular Ring Seal
Specifications
- Manufacturer: Cummins
- Part Number: 3925466
- Product Type: Thermostat Gasket
- Seal Design: Rectangular Ring Seal
- Material: OEM Specification Gasket Material
- Installation Location: Thermostat Housing
- Engine Compatibility: Cummins 5.9L 12-Valve
- Model Years: 1994-1998
- Application: Cooling System Service and Thermostat Replacement
- OEM Replacement: Yes
Cross Reference Numbers
3925466, Cummins 3925466, OEM Thermostat Gasket, Thermostat Housing Seal, Rectangular Ring Seal
FAQ
What does the Cummins 3925466 gasket seal?
The 3925466 gasket seals the thermostat inside the thermostat housing, helping prevent coolant leaks and ensuring proper cooling system operation.
Should I replace this gasket when replacing my thermostat?
Yes. Cummins recommends replacing the thermostat gasket whenever the thermostat housing is removed to ensure a proper seal and prevent future leaks.
Is this a genuine Cummins OEM part?
Yes. The 3925466 is a genuine Cummins OEM thermostat gasket manufactured to factory specifications.
Will this fit all 5.9L Cummins engines?
This gasket is commonly used on 1994-1998 5.9L 12-valve Cummins applications. Always verify fitment using your engine serial number or original part number before ordering.
Can a damaged thermostat gasket cause coolant leaks?
Yes. A worn, damaged, or improperly installed gasket can allow coolant to leak around the thermostat housing and may lead to cooling system issues.
Is sealant required during installation?
Follow Cummins service procedures. In most applications, the OEM gasket is designed to seal properly when installed on clean mating surfaces without excessive sealant.
