{"product_id":"bb-chevy-exhaust-gaskets-1","title":"Ultra-Seal Header Gaskets Fits 1965-1990 Chevrolet 396-454 Mark IV Big Block Round Ports, 2.15 Inch Mr Gasket","description":"\u003cp\u003e\u003cb\u003ePart #:\u003c\/b\u003e 5912\u003c\/p\u003e\u003cp\u003eManufactured 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.Has A Graphite Core W\/ Steel Outer LayersGraphite Core Has Excellent Thermo-conductivityCoated With High Temp Silicone For SealingWill Not (brindle ) Or Indent Aluminum HeadsDetails:Collector Gaskets Included: NoEmission Code: 5Gasket Line: Ultra-SealMaterial: Ultra-sealPort Shape: RoundPort Size: 2.15Warranty: Manufacturer's Limited 90 Day Warranty\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\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\u003cp\u003eExhaust Manifold \/ Header Gasket - Ultra-Seal - 2.150 in Round Port - Steel Core Laminate - Big Block Chevy - Pair\u003c\/p\u003e","brand":"Mr. Gasket","offers":[{"title":"Default Title","offer_id":51827671499064,"sku":"M00S 5912","price":232.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/horsepower-asset-522284-971676-square_7e994c98-78bd-4e5b-aa1e-311c76f9515e.webp?v=1774558003","url":"https:\/\/store.motormia.co\/products\/bb-chevy-exhaust-gaskets-1","provider":"MOTORMIA","version":"1.0","type":"link"}