Product Description
Cummins 3974127 OEM Oil Cooler-to-Filter Head Gasket – ISB 6.7L (2007.5–2024)
The Cummins 3974127 OEM Oil Cooler-to-Filter Head Gasket is a genuine Cummins sealing gasket designed to fit between the engine oil cooler assembly and oil filter head on 2007.5–2024 ISB 6.7L Cummins engines. Engineered to maintain proper lubrication flow and prevent oil leaks, this OEM gasket delivers the precise fit, sealing performance, and durability required for long-term reliability in both stock and work-duty applications.
Whether you're replacing an oil cooler, servicing the oil filter housing, or repairing an oil leak, the Cummins 3974127 gasket helps restore factory sealing performance. Genuine Cummins components are manufactured to OEM specifications to ensure proper fitment and dependable operation under the high temperatures and pressure cycles found in modern diesel engines.
Features
- Genuine Cummins OEM replacement gasket
- Seals the oil cooler-to-filter head interface
- Helps prevent oil leaks and seepage
- Maintains proper lubrication system integrity
- Direct-fit replacement for factory gasket
- Designed for high-temperature diesel engine operation
- Constructed to Cummins OEM specifications
- Recommended replacement whenever the oil cooler or filter head is removed
- Ideal for maintenance, repair, and oil cooler service procedures
Fitment
- 2007.5–2024 Ram 2500 6.7L Cummins
- 2007.5–2024 Ram 3500 6.7L Cummins
- 2007.5–2024 Ram 4500 6.7L Cummins
- 2007.5–2024 Ram 5500 6.7L Cummins
- ISB 6.7L Cummins B-Series engines
- Select QSB 6.7L industrial applications
Note: Some industrial and commercial applications may use alternate configurations. Always verify compatibility by engine serial number (ESN) before ordering.
What's Included
- One (1) Genuine Cummins 3974127 Oil Cooler-to-Filter Head Gasket
Specifications
- Manufacturer: Cummins Genuine Parts
- Part Number: 3974127
- Component Type: Oil Cooler-to-Filter Head Gasket
- Engine Compatibility: ISB 6.7L Cummins
- Application: Oil Cooler to Oil Filter Head Interface
- Material: OEM Cummins Gasket Material
- Installation Location: Between Oil Cooler Assembly and Filter Head
- Function: Prevents Oil Leakage and Maintains Proper Oil Flow
- Fitment Years: 2007.5–2024
- Fuel Type: Diesel
- OEM Replacement: Yes
Cross Reference Numbers
3974127, Cummins 3974127, Oil Cooler-to-Filter Head Gasket, Filter Head Gasket, Oil Cooler Gasket, CUM3974127, OEM Cummins Oil Cooler Gasket
Related Components
- Cummins 3975818 Oil Cooler Assembly
- Cummins 5289557 Oil Filter Housing
- Cummins 2830559 Oil Cooler-to-Engine Block Gasket
- Cummins 3915787 Threaded Plug
- Cummins 3900625 Hex Flange Head Cap Screw
FAQ
What does the Cummins 3974127 gasket seal?
This gasket seals the connection between the engine oil cooler and the oil filter head, helping prevent oil leaks while maintaining proper lubrication flow throughout the engine.
When should the Cummins 3974127 gasket be replaced?
The gasket should be replaced whenever the oil cooler or oil filter housing is removed. Installing a new OEM gasket helps ensure a proper seal and prevents future leaks.
Will this fit all 6.7L Cummins engines from 2007.5 through 2024?
Yes. The 3974127 gasket is commonly used on 2007.5–2024 ISB 6.7L Cummins engines found in Ram trucks and many related applications. Always verify by ESN for confirmation.
Is this a genuine Cummins OEM gasket?
Yes. Part number 3974127 is an authentic Cummins OEM replacement gasket manufactured to factory specifications.
Can I reuse my old gasket during oil cooler service?
No. Cummins recommends installing a new gasket whenever the oil cooler or filter head is serviced to ensure proper sealing and prevent oil leaks.
