Hamilton Cams Fire Ring Head Gasket .070 in 89-98 5.9L Cummins 12-Valve
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Regular price
$299.00
Verified Fitment & Application Support
This product is selected for proper fitment and compatibility with the listed engine application. Our team is available to assist with fitment questions, installation considerations, and supporting components to ensure a smooth install and reliable performance.
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Compliance & Restrictions
California Proposition 65 (Prop 65)
WARNING: This product can expose you to chemicals which is known to the State of California to cause cancer and/or reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
CARB / California Emissions Compliance
This item may be restricted in California and other regions with emissions regulations. If applicable, it is intended for
competition/off-road use only unless otherwise stated. It is the customer’s responsibility to confirm local compliance before purchase.
Orders shipping to restricted areas may be canceled.
Fire ring head gasket for the 12-valve Cummins, .070 inch thick with .105 inch wire at a 4.560 inch outside diameter. A fire ring seals by biting into a machined groove rather than relying on clamp load across a flat surface, which is what makes it hold when boost and cylinder pressure climb past what a stock gasket will take.
Key Features
- .070 inch (1.5mm) gasket thickness
- 4.560 inch wire outside diameter, .105 inch wire
- Groove specification: .025-.026 inch depth cut with a .120 inch radius cutter
Fitment
- 1989-1998 Dodge Ram 5.9L Cummins 12-valve
Machining and Installation
- Machine both head and block for flatness; this matters increasingly above 800 HP
- Under 800 HP the groove can be cut in the head only
- Above 800 HP, ARP 625 studs are recommended
- Always use a .120 inch radiused cutter for a consistent groove profile
- Head studs are required to achieve proper clamp load; lubricate nuts, washers and threads for even torque
- Torque to 130 ft-lbs before first startup, then hot retorque once at operating temperature
- Gasket compression changes valve lash, so set lash after the final retorque
- Never exceed the fastener manufacturer's torque limits
Product Details
- Brand: Hamilton Cams
- Manufacturer Part Number: 07-g-12vf
- UPC: 857340008872
Shipping Height: 0.0
Shipping Length: 0.0
Shipping Width: 0.0