{"product_id":"gasket-aluminum-exhaust-header-1986-buick-grand-national-header","title":"1986 Buick Grand National Aluminum Exhaust Header Gasket","description":"\u003cdiv class=\"product-container\"\u003e\n\u003ch6 class=\"product-title\"\u003e1986 Buick Grand National Aluminum Exhaust Header Gasket\u003c\/h6\u003e\n\u003cdiv class=\"product-intro\"\u003e\n\u003cp class=\"lead-text\"\u003e\u003cstrong\u003eSeal your header-to-manifold joint with aluminum construction designed for durability and heat resistance.\u003c\/strong\u003e This gasket handles the thermal cycling and pressure of high-flow exhaust systems. Aluminum core resists warping and maintains a consistent seal across multiple heat cycles.\u003c\/p\u003e\n\u003cdiv class=\"trust-indicators\"\u003e\n\u003cspan class=\"badge\"\u003e✓ Ships from FL Warehouse\u003c\/span\u003e \u003cspan class=\"badge\"\u003e✓ Aluminum Construction\u003c\/span\u003e \u003cspan class=\"badge\"\u003e✓ Direct-from-Warehouse\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch6 class=\"section-title\"\u003eKey Features\u003c\/h6\u003e\n\u003cdiv class=\"design-features\"\u003e\u003cul class=\"feature-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminum core material\u003c\/strong\u003e - Resists thermal warping under sustained exhaust heat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader-specific geometry\u003c\/strong\u003e - Designed to seal port-to-manifold interface consistently\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReady to install\u003c\/strong\u003e - No additional prep or coating required before fitting\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003ch6 class=\"section-title\"\u003eSpecs\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003eMaterial: Aluminum\u003c\/li\u003e\n\u003cli\u003eApplication: Exhaust header-to-manifold gasket\u003c\/li\u003e\n\u003cli\u003eCondition: New\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch6 class=\"section-title\"\u003eWhats Included\u003c\/h6\u003e\n\u003cul\u003e\u003cli\u003eExhaust header gasket (1 piece)\u003c\/li\u003e\u003c\/ul\u003e\n\n\u003cdiv class=\"product-faq\"\u003e\n\u003ch6 class=\"section-title\"\u003eFrequently Asked Questions\u003c\/h6\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need to clean the mounting surfaces before installing this gasket?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. Clean both the header and manifold mating surfaces with a wire brush to remove carbon buildup and old gasket residue. A clean, flat surface ensures a proper seal and prevents exhaust leaks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp\u003e\u003cstrong\u003eWill this gasket work with a stock manifold or only with an aftermarket header?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis gasket is designed for header applications. If you're running stock manifold setup, verify your port pattern matches before ordering. Confirm bolt hole spacing and port diameter align with your specific configuration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's the return process if the gasket doesn't fit once I receive it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eContact ModSupply customer service with photos of the gasket against your header or manifold ports. Most fitment issues can be resolved with verification before installation. Keep the gasket in original condition for fastest resolution.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"K2 Industries","offers":[{"title":"Default Title","offer_id":45873560322282,"sku":"K2-4443-BUI-006-TSARK","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0477\/0427\/7142\/files\/GKT-A-HD-GN86-1.jpg?v=1772738844","url":"https:\/\/www.k2-industries.com\/en-au\/products\/gasket-aluminum-exhaust-header-1986-buick-grand-national-header","provider":"K2 Industries","version":"1.0","type":"link"}