{"product_id":"hamilton-cams-fire-ring-head-gasket-080-in-89-98-5-9l-cummins-12-valve","title":"Hamilton Cams Fire Ring Head Gasket .080 in 89-98 5.9L Cummins 12-Valve","description":"\u003cp\u003eThe 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.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e.080 inch (1.8mm) gasket thickness\u003c\/li\u003e\n\u003cli\u003e4.560 inch wire outside diameter, .105 inch wire\u003c\/li\u003e\n\u003cli\u003eGroove specification: .016-.017 inch depth in the cylinder head with a .120 inch radius cutter\u003c\/li\u003e\n\u003cli\u003eAdded thickness helps regain piston-to-valve clearance on camshaft installs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFitment\u003c\/h4\u003e\u003cul\u003e\u003cli\u003e1989-1998 Dodge Ram 2500 and 3500 with the 5.9L Cummins 12-valve\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eMachining and Installation\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMachine both head and block for flatness, particularly above 800 HP\u003c\/li\u003e\n\u003cli\u003eUnder 800 HP the groove can be cut in the cylinder head only\u003c\/li\u003e\n\u003cli\u003eAbove 800 HP use high tensile ARP 625 fasteners\u003c\/li\u003e\n\u003cli\u003eAlways use a radiused cutter for accurate groove formation and wire contact\u003c\/li\u003e\n\u003cli\u003eHead studs are required; lubricate nut, washer and threads for even clamp load\u003c\/li\u003e\n\u003cli\u003eTorque to 130 ft-lbs before first startup, then hot retorque at operating temperature\u003c\/li\u003e\n\u003cli\u003eEach retorque compresses the gasket further and reduces valve lash, so set lash last\u003c\/li\u003e\n\u003cli\u003eNever exceed the fastener manufacturer's torque limits\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eProduct Details\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBrand: Hamilton Cams\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: 07-g-12vf20\u003c\/li\u003e\n\u003cli\u003eUPC: 857340008897\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hamilton Cams","offers":[{"title":"Default Title","offer_id":47609119670445,"sku":"07-g-12vf20","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/5200\/0173\/files\/6.7f-2048x811.jpg?v=1789536915","url":"https:\/\/www.dfispdx.com\/products\/hamilton-cams-fire-ring-head-gasket-080-in-89-98-5-9l-cummins-12-valve","provider":"Diesel Fuel Injection Service","version":"1.0","type":"link"}