Upgrade your 12V Cummins (1989-1998) with this Fire Ring Gasket, specially engineered to handle high boost pressures and extreme horsepower. With a .070 Inch thickness (1.5 mm) and .105 Inch wire at 4.560 Inch O.D., you'll gain a robust seal that stands up to the stresses of heavy-duty and performance applications.

Features and Benefits:

• Reliable High-Performance Sealing: Tested to handle extreme pressures for racing, towing, or heavy-duty use.
• Proven Durability: .070 Inch thickness ensures a tough, stable seal in boosted applications.
• Ease of Installation: Straightforward torque procedure with standard machining practices.
• Trusted Expertise: Backed by Hamilton's long-standing commitment to diesel innovation.
• Upgrade to our Fire Ring Gasket for your 1989-1998 Cummins and confidently push the limits of power.

Details:

• Sold As: Each
• Universal: No
• Vehicle Type: Truck
• Liter: 5.9L
• Fuel Type: Diesel
• Valve: 12-Valve
• Thickness: .070 Inch (1.5 mm)
• Fire Ring Wire Size: .105 Inch
• Fire Ring Outside Diameter: 4.560 Inch
• Groove Depth: .025 Inch - .026 Inch depth with a .120 Inch radius cutter

Fitment Notes:

• Fitment: 1989-1998 Dodge Ram 5.9L Cummins 12-Valve engines requiring a standard-thickness fire-ring head gasket.
• Use quality studs to ensure proper clamp load - especially with our competition gasket.
• Apply liberal lubrication on nuts, washers, and threads for even torque and a consistent seal.
• Never exceed the manufacturer's torque limits; fasteners at full torque store significant energy.

Installation Notes:

• Achieve maximum sealing by machining both the head and block - especially crucial over 800 HP.
• Under 800 HP: Cutting grooves in just the head
• Over 800, be sure to run 625 studs
• Always use a .120 Inch radiused cutter for precise, consistent groove profiles.
• Initial: Torque to 130 ft-lb before the first startup.
• Hot Retorque: After reaching operating temp, retorque while the engine is warm.
• Check Valve Lash: Gasket compression changes valve lash; readjust as needed.