The Cummins® inline-six turbo diesel has a reputation for running hundreds of thousands of miles in Dodge and Ram heavy-duty trucks. When it is time for a head job or an overhaul, the gaskets have to hold up to the same standard: high compression, high boost and heavy towing loads. Evergreen gasket sets with Eversealed™ Technology cover both the 5.9 Cummins 24-valve common rail and the 6.7 Cummins, available as full gasket sets and conversion gasket sets.
Evergreen Cummins® Gasket Sets
Gasket Sets
| Evergreen Part # | Engine | Years | Applications |
|---|---|---|---|
| 8-30159DS | 5.9L Cummins® 24-Valve Common Rail (ISB) | 2003–2009 | Dodge Ram 2500, 3500 (VIN codes C, 6, 7) |
| 8-30167 | 6.7L Cummins® (ISB 6.7) | 2007–2012 | Dodge Ram / Ram 2500, 3500, 4500, 5500 |
Conversion Gasket Sets
A conversion gasket set covers the gaskets and seals for a rebuild without the cylinder head gaskets. It is the right choice when head gaskets are bought separately or the heads are handled by a machine shop. Not sure which set you need? Read Full Gasket Set vs. Head Set vs. Conversion Set.
| Evergreen Part # | Engine | Years | Applications |
|---|---|---|---|
| 6-30159DS | 5.9L Cummins® 24-Valve Common Rail (ISB) | 2003–2009 | Dodge Ram 2500, 3500 (VIN codes C, 6, 7) |
| 6-30167 | 6.7L Cummins® (ISB 6.7) | 2007–2018 | Dodge Ram / Ram 2500, 3500, 4500, 5500 |
Why Cummins® Engines Are Hard on Gaskets
- High cylinder pressure. Diesel compression and turbo boost put far more load on the head gasket than a typical gasoline engine.
- Added power. Tuning, larger injectors and higher boost are common on these trucks, and they are the most common reason a head gasket fails.
- Heat cycling and towing. Long pulls under load expand and contract the head and block, testing every sealing surface.
Common Signs You Need a Gasket Job
- Coolant loss with no visible external leak
- Pressurized cooling system or bubbles in the coolant reservoir
- White exhaust smoke at start-up
- Oil seepage at the valve cover, front cover or oil pan
Confirm a head gasket failure with a combustion leak test or cooling system pressure test before teardown. See Signs of a Blown Head Gasket and How to Confirm the Diagnosis.
Notes by Engine
- 5.9 Cummins 24-valve common rail (2003–2009): A common-rail engine used heavily for towing. Many of these trucks are tuned, so check for signs of excessive boost or fueling before reassembly, or the new head gasket will face the same stress.
- 6.7 Cummins (2007–2018): Higher output and emissions equipment add heat. Inspect the cooling system and the EGR system for leaks during the job, and replace any hardened coolant hoses you disturb.
What Eversealed™ Technology Brings to the Job
- Sealing designed for diesel cylinder pressure, matched to each engine.
- Set coverage so the gaskets and seals you disturb are replaced together, not one leak at a time.
- Consistent fit to reduce comebacks and rework.
Installation Tips
- Check deck and head flatness. A new gasket cannot make up for a warped surface. See Cracked or Warped Cylinder Head? How to Inspect and Decide.
- Prepare surfaces properly. No gouges, no leftover gasket material, no abrasive discs that round off edges. See Gasket Surface Preparation.
- Head bolts or studs. Follow the torque sequence and specification exactly. On engines with added power, many builders upgrade to head studs.
- Install the head gasket dry unless the instructions say otherwise.
Find the Right Set
Use the Evergreen eCatalog to confirm the correct part number for your vehicle, and always verify the engine, VIN code and included components before ordering.
Cummins® is a registered trademark of Cummins Inc. Duramax® is a registered trademark of General Motors. Power Stroke® is a registered trademark of Ford Motor Company. All vehicle and engine names are trademarks of their respective owners and are used for application reference only. Evergreen is not affiliated with or endorsed by these companies.
