Product Description
Keep your 6.7L Cummins emissions system sealed up tight with the genuine Cummins 3979769 OEM EGR valve gasket. This factory-spec gasket restores a leak-free seal between the EGR valve and intake mounting surface on 2007.5–2021 Ram 2500/3500/4500/5500 trucks, helping maintain proper exhaust gas recirculation, reduce NOx emissions, and prevent soot streaking or exhaust odor in the engine bay.
Because it’s a genuine Cummins part, 3979769 is built to the same material, thickness, and emboss profile used at the factory. That means consistent clamp load under heat, excellent sealing around the EGR port, and long-term durability even on tuned work trucks that spend their lives towing or idling. Whenever the EGR valve is removed for cleaning or replacement, Cummins specifies installing a new gasket—3979769 gives you the right seal the first time.
This gasket is a direct-fit service part for most 2007.5–2021 6.7L ISB Ram applications using the OE-style EGR valve. It also cross-references popular Mopar and aftermarket numbers, making it a smart choice when you want OEM sealing quality instead of a generic “will-fit” gasket.
Key Features
- Genuine Cummins 3979769 OEM EGR valve gasket
- Direct replacement for factory EGR valve-to-intake gasket on 6.7L Cummins
- Maintains proper EGR flow and emissions compliance
- High-temperature gasket material for long life under soot and heat
- One-time-use design – replace any time the EGR valve is removed
- Backed by Cummins engineering and CPP Diesel’s diesel expertise
Verified Fitment – 6.7L Cummins Applications
Automotive (Ram/Dodge)
- 2007.5–2012 Dodge Ram 2500/3500 6.7L Cummins (24V ISB)
- 2013–2018 Ram 2500/3500 6.7L Cummins (24V ISB)
- 2013–2021 Ram 3500/4500/5500 6.7L Cummins cab & chassis (verify by VIN/ESN)
Also used on various on-highway and industrial ISB/QSB 6.7 platforms. Always confirm by VIN/ESN or engine serial number when working on non-Ram applications.
Cross-Reference & Related Cummins Gaskets
This Cummins EGR valve gasket 3979769 commonly cross-references or appears alongside:
- Mopar 68005184AA (EGR valve gasket – Ram 6.7L)
- PAI 131761 and other aftermarket equivalents (use Cummins 3979769 for OEM sealing)
For a complete Cummins OEM sealing strategy on your 6.7L ISB, pair 3979769 with these genuine Cummins gaskets from CPP Diesel:
- CUMMINS 4337615 OEM ENGINE OIL PAN GASKET – ISB 6.7L (2007.5–2018)
- CUMMINS 5621817 OEM CYLINDER HEAD GASKET (STANDARD THICKNESS) – ISB 6.7L (2007.5–2018)
- CUMMINS 3974127 OEM OIL COOLER-TO-FILTER HEAD GASKET – ISB 6.7L (2007.5–2024)
- CUMMINS 5264566 OEM INTAKE AIR HEATER GASKET – 6.7L CUMMINS
Installation Notes
- Clean both mating surfaces thoroughly; remove carbon and old gasket material without gouging aluminum.
- Always install a new gasket (do not reuse an old EGR gasket).
- Follow OE torque specs and tightening sequence for the EGR valve fasteners.
- After installation, clear any EGR-related codes and verify proper EGR operation with a scan tool.
Specifications for cummins 3979769
| Brand | Cummins |
| Part Number | 3979769 |
| UPC | 832313102528 |
| GTIN | 832313102528 |
| Engine Compatibility | 6.7L Cummins ISB (Ram 2500/3500/4500/5500, 2007.5–2021; various ISB/QSB 6.7 industrial applications – verify by ESN) |
| Component Location | Between EGR valve and intake mounting surface |
| Shipping Info | Shipping calculated at checkout; optional shipping insurance available at checkout |
| Approximate Shipping Weight | 0.13 lb (0.06 kg) |
| Package Dimensions (Approx.) | 6 in x 6 in x 1 in |
| Cross Reference | Cummins 3979769; Mopar 68005184AA; PAI 131761; various aftermarket EGR valve gaskets for 6.7L Cummins |
| E-Codes | Not applicable (gasket only; no calibration code) |
| Prop 65 | This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov. |
FAQ
Will this gasket fit my 6.7L Cummins Ram?In most cases, yes. Cummins 3979769 is the OE EGR valve gasket for 2007.5–2021 Ram 2500/3500/4500/5500 trucks equipped with the 6.7L ISB. Because there are occasional build-date and calibration changes, we always recommend verifying by VIN or engine serial number if you’re unsure.
Do I need to replace this gasket every time I remove the EGR valve?
Yes. Like most emissions and exhaust gaskets, this is considered a one-time-use part. Anytime the EGR valve is removed for cleaning, diagnostics, or replacement, install a new Cummins 3979769 gasket to prevent exhaust leaks and repeat labor.
Is this a genuine Cummins part or aftermarket?
This listing is for a genuine Cummins OEM gasket. While there are aftermarket alternatives on the market, we recommend Cummins-branded sealing components for long-term reliability and proper emissions performance.
What symptoms can a leaking EGR valve gasket cause?
A failed EGR valve gasket can lead to visible soot around the EGR mounting area, exhaust odor in the engine bay, abnormal EGR flow readings, potential drivability concerns, and in some cases fault codes related to EGR performance. Replacing the gasket restores the proper seal and helps keep emissions under control.
Can I use this gasket with an aftermarket or reman EGR valve?
As long as the valve uses the OEM-style footprint for 6.7L ISB applications, this Cummins gasket will typically fit. Most quality reman and aftermarket EGR valves are built around the OE gasket shape; when in doubt, compare the flange to your original valve or contact the manufacturer.
