Hamilton Cams Fire Ring Head Gasket .080 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.
The thicker of Hamilton's two 12-valve fire ring gaskets at .080 inch, with .105 inch wire at a 4.560 inch outside diameter. Beyond sealing a high-boost engine, the extra .010 inch over the standard gasket is the usual way to recover piston-to-valve clearance when a performance camshaft does not quite drop in.
Key Features
- .080 inch (1.8mm) gasket thickness
- 4.560 inch wire outside diameter, .105 inch wire
- Groove specification: .016-.017 inch depth in the cylinder head with a .120 inch radius cutter
- Added thickness helps regain piston-to-valve clearance on camshaft installs
Fitment
- 1989-1998 Dodge Ram 2500 and 3500 with the 5.9L Cummins 12-valve
Machining and Installation
- Machine both head and block for flatness, particularly above 800 HP
- Under 800 HP the groove can be cut in the cylinder head only
- Above 800 HP use high tensile ARP 625 fasteners
- Always use a radiused cutter for accurate groove formation and wire contact
- Head studs are required; lubricate nut, washer and threads for even clamp load
- Torque to 130 ft-lbs before first startup, then hot retorque at operating temperature
- Each retorque compresses the gasket further and reduces valve lash, so set lash last
- Never exceed the fastener manufacturer's torque limits
Product Details
- Brand: Hamilton Cams
- Manufacturer Part Number: 07-g-12vf20
- UPC: 857340008897
Shipping Height: 0.0
Shipping Length: 0.0
Shipping Width: 0.0