Upgrade your 12V Cummins (1989-1998) with our Fire Ring Gasket, engineered for reliable sealing under high boost and extreme horsepower. At .080 Inch thickness (1.8 mm) and 4.560 Inch wire O.D., this gasket is built to handle the stress of performance applications. Trust our Fire Ring Gasket to keep your 1989-1998 Cummins sealed under pressure.
With proper machining, studs, and adherence to torque procedures, you'll achieve a robust setup designed to go the distance - whether you're hauling, racing, or simply demanding more from your 12V diesel.
Features and Benefits:
- High-Horsepower Ready: Built to withstand demanding performance applications beyond 800 HP.
- Precision Engineering: .080 Inch thickness, radiused grooves, and .105 Inch wire for optimal sealing.
- Enhanced Reliability: Reduce the risk of head gasket failure with proper studs and consistent clamp load.
- Backed by Expertise: Trusted by diesel enthusiasts who demand durability and performance.
Details:
- Sold As: Each
- Universal: No
- Vehicle Type: Truck
- Liter: 5.9L
- Fuel Type: Diesel
- Valve: 12-Valve
- Thickness: .080 Inch (1.8 mm)
- Fire Ring Wire Size: .105 Inch
- Fire Ring Outside Diameter: 4.560 Inch
- Groove Depth: .016 Inch - .017 Inch depth in cylinder head with a .120 Inch radius cutter
Fitment Notes:
- Fitment: 1989-1998 Dodge Ram 5.9L Cummins 12-Valve engines requiring a 0.020 Inch-over fire-ring head gasket.
- Use Quality Studs: Ensure proper clamp load, vital for high-performance diesel applications.
- Generous Lubrication: Coat nuts, washers, and threads thoroughly to guarantee even torque across all studs.
- Manufacturer Torque Limits: Never exceed them - fasteners at full torque store significant potential energy.
Installation Notes:
- Machine Block & Head: Achieve maximum flatness for a proper seal - especially important if pushing horsepower beyond 800 HP.
- Engines under 800 HP: Cut groove in just the cylinder head
- Engines over 800 HP: make sure you use a high tensile ARP 625 fastener
- Radiused Cutter: Always recommended for precise groove formation and the best gasket-to-wire contact.
- Initial Torque: 130 ft-lbs before first startup.
- Hot Retorque: After reaching operating temperature, retorque while the engine is still warm.
- Check Valve Lash: Each retorque compresses the gasket further, reducing valve lash - readjust as needed.