Hamilton Cams 2007.5-2018 Dodge/Ram 2500/3500 6.7L Cummins Fire Ring Head Gasket +.020in (.066in)
Can I pick up my order or have it installed at your shop?
Can I pick up my order or have it installed at your shop?
Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.
How do I know if this part fits my vehicle?
How do I know if this part fits my vehicle?
Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.
What if I need to return a product or it’s defective?
What if I need to return a product or it’s defective?
Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)
What's the lead time on custom or fabricated parts?
What's the lead time on custom or fabricated parts?
Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.
6.7L Fire Ring Gasket – .066″ Thickness, 4.560″ Diameter Wire
Looking for a reliable head gasket solution for your 6.7L Cummins under high-performance conditions? Our 6.7L Fire Ring Gasket is designed to handle extreme cylinder pressures, providing a superior seal that protects against leaks and failure—especially important as horsepower climbs beyond 800 HP.
Gasket Specifications
- Thickness: .066″ (1.75 mm)
- Wire O.D.: 4.560″ (using .105″ wire)
- Groove Radius: .017″–.018″ if cutting grooves in the head or block
Installation & Preparation
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Studs Required
- Must use high-strength studs to achieve proper clamp load, particularly with our competition gasket.
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Surface Flatness
- Ensure the head is within .003″ end-to-end for optimal sealing.
- Best practice: Machine both the head and block for perfect flatness.
- if you do not surface the block, be sure to use an axe sharpening stone with 320 or finer to clean up the deck surface.
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Groove Cutting
- Engines <800 HP: cut grooves in the head
- Be sure to use 625 studs
- Always use a .120″ radiused cutter for precise groove formation.
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Torque Procedure
- Initial Torque: 130 ft-lbs at startup.
- Hot Retorque: After reaching operating temperature, retorque while the engine is still warm.
- Check Valve Lash: Each retorque further compresses the gasket, reducing valve lash—re-adjust as needed.
- Final Check: Retorque at least once more before applying full load or RPM.
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Proper Lubrication
- Apply a liberal amount of lube to the nut, washer, and threads so that all studs see a consistent clamp load.
- Never exceed manufacturer torque limits—fasteners at full torque store significant potential energy.
Why Choose Our 6.7L Fire Ring Gasket?
- Superior Seal under high boost and extreme pressures.
- Reduced Risk of Failure thanks to consistent clamp load and radiused grooves.
- Perfect for High-Power Builds, particularly those pushing beyond 800 HP.
- Proven Durability in severe-duty performance applications.
This part fits the following vehicles:
| Years | Make & Model |
|---|---|
| 2007 | Dodge Ram 2500 |
| 2007 | Dodge Ram 3500 |
| 2018 | Ram 2500 |
| 2018 | Ram 3500 |
Fitment is listed by year, make and model. Some applications also depend on cab, bed, drivetrain or engine — if you are not sure, call 636-429-7020 or send us your vehicle details and we will confirm before you order.
