{"product_id":"mr-gasket-ultra-seal-header-gaskets-5912","title":"Mr. Gasket Ultra-Seal Header Gaskets - 5912","description":"Manufactured from high-temperature steel core\/graphite faced exhaust material. Expanded steel core provides stability and maximum torque retention to eliminate gasket failure. Graphite facing provides excellent heat resistance and thermal conductivity to transfer heat away from the cylinder head. Conforms to and seals minor surface irregularities. High recovery material allows header or manifold flange to stay sealed if flange loses clamp-load. Can be trimmed if necessary for modified port applications. For original equipment replacement, high performance street, drag race and oval track use.\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHas A Graphite Core W\/ Steel Outer Layers\u003c\/li\u003e\n\u003cli\u003eGraphite Core Has Excellent Thermo-conductivity\u003c\/li\u003e\n\u003cli\u003eCoated With High Temp Silicone For Sealing\u003c\/li\u003e\n\u003cli\u003eWill Not (brindle ) Or Indent Aluminum Heads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Specifications:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Details:\u003c\/strong\u003e Fits 1965-1990 Chevrolet 396-454 Mark IV Big Block. Round Ports, 2.15 Inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollector Gaskets Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine:\u003c\/strong\u003e Chevrolet Big Block Mark IV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGasket Line:\u003c\/strong\u003e Ultra-Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Ultra-seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePort Shape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePort Size:\u003c\/strong\u003e 2.15 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Header Gaskets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e .062 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.38\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Mr. Gasket","offers":[{"title":"Default Title","offer_id":49723201454318,"sku":"MRG-5912","price":47.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/9110\/6798\/files\/0c85e6682b410a5e36d819ee39f841a83265215f.jpg?v=1791650176","url":"https:\/\/elmosspeedshop.com\/products\/mr-gasket-ultra-seal-header-gaskets-5912","provider":"Elmo's Speed Shop","version":"1.0","type":"link"}