2007.5-2018 Cummins 6.7L Hamilton Cams Fire Ring Gasket .066" (07-g-6.7f20)
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$443.51 CAD
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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
1. Studs Required
- Must use high-strength studs to achieve proper clamp load, particularly with our competition gasket.
2. 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.
3. 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.
4. 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.
5. 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.