{"product_id":"hamilton-cams-fire-ring-head-gasket-070-in-89-98-5-9l-cummins-12-valve","title":"Hamilton Cams Fire Ring Head Gasket .070 in 89-98 5.9L Cummins 12-Valve","description":"\u003cp\u003eFire 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.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e.070 inch (1.5mm) gasket thickness\u003c\/li\u003e\n\u003cli\u003e4.560 inch wire outside diameter, .105 inch wire\u003c\/li\u003e\n\u003cli\u003eGroove specification: .025-.026 inch depth cut with a .120 inch radius cutter\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFitment\u003c\/h4\u003e\u003cul\u003e\u003cli\u003e1989-1998 Dodge Ram 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; this matters increasingly above 800 HP\u003c\/li\u003e\n\u003cli\u003eUnder 800 HP the groove can be cut in the head only\u003c\/li\u003e\n\u003cli\u003eAbove 800 HP, ARP 625 studs are recommended\u003c\/li\u003e\n\u003cli\u003eAlways use a .120 inch radiused cutter for a consistent groove profile\u003c\/li\u003e\n\u003cli\u003eHead studs are required to achieve proper clamp load; lubricate nuts, washers and threads for even torque\u003c\/li\u003e\n\u003cli\u003eTorque to 130 ft-lbs before first startup, then hot retorque once at operating temperature\u003c\/li\u003e\n\u003cli\u003eGasket compression changes valve lash, so set lash after the final retorque\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-12vf\u003c\/li\u003e\n\u003cli\u003eUPC: 857340008872\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hamilton Cams","offers":[{"title":"Default Title","offer_id":47609121112237,"sku":"07-g-12vf","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/5200\/0173\/files\/12V-head-gasket-2048x786.jpg?v=1789536918","url":"https:\/\/www.dfispdx.com\/products\/hamilton-cams-fire-ring-head-gasket-070-in-89-98-5-9l-cummins-12-valve","provider":"Diesel Fuel Injection Service","version":"1.0","type":"link"}