Product Description
The Cummins 3929792 OEM Oil Cooler Gasket is the factory-correct seal used between the oil cooler assembly and the oil filter head on early 1989–1996 5.9L 12-Valve Cummins (6BT) engines. This gasket is essential for maintaining proper oil pressure, preventing external leakage, and ensuring reliable oil flow through the cooler core. As part of the lubrication system, only genuine Cummins gaskets guarantee correct material composition, sealing thickness, and long-term heat resistance.
If you're rebuilding the bottom end, servicing the oil cooler, or fixing an oil leak around the cooler housing, replacing the gasket with a 3929792 OEM Cummins part ensures a leak-free, factory-fit installation.
Fitment
- 1989–1996 Dodge Ram 2500 / 3500 with 5.9L 12-Valve Cummins (6BT)
- 5.9L B-Series engines using the early-style cooler and filter head interface
Note: For industrial or equipment engines, verify by ESN because multiple cooler and filter head combinations existed across B-Series production.
Cross-Reference (Cummins-Only)
Related Cummins lubrication system components:
• Cummins 3915787 OEM Threaded Plug – Oil Filter Housing
• Cummins 3900625 OEM Hex Flange Head Cap Screw
• Cummins 3900267 OEM Tappet Cover Bolt Grommet Seal
FAQ
Does this 3929792 gasket fit all 5.9L Cummins engines?
No. This gasket fits 1989–1996 12-Valve engines using the early-style oil cooler and filter head configuration. Later engines use different gasket designs.
Should I replace the oil cooler gasket when fixing an oil leak in this area?
Yes. Once the oil cooler or filter head is removed, Cummins recommends installing a new OEM gasket to prevent future leaks.
Do I need sealant with this gasket?
No sealant is typically required. Install the gasket clean and dry unless the Cummins service manual specifies otherwise for your ESN.
Can this gasket cause oil pressure issues if leaking?
Yes. A leaking cooler-to-filter head gasket can cause oil loss and reduced lubrication performance. Always replace with genuine components during cooler service.
Specifications for cummins 3929792
| Specification | Value |
|---|---|
| Brand | Cummins Genuine Parts |
| Part Number | 3929792 |
| Component Type | Oil Cooler Gasket – Cooler to Filter Head |
| UPC | Not Published |
| GTIN | Not Published |
| Cross Reference | Used with early-style Cummins oil cooler assemblies (12V) |
| E-Codes | N/A |
| Shipping Weight | 0.10 lbs |
| Package Dimensions | 7 x 4 x 0.25 in |
| Prop 65 Warning | Not Applicable |
