{"product_id":"dorman-exhaust-manifold-kit-driver-side-674-522-ductile-iron-includes-gaskets-hardware","title":"Dorman Exhaust Manifold Kit Driver Side 674-522 — Ductile-Iron, Includes Gaskets \u0026 Hardware","description":"\u003cp\u003e\u003cstrong\u003eThis Dorman 674-522 driver-side exhaust manifold kit replaces warped or cracked OE manifolds with a ductile-iron, direct-fit assembly that includes gaskets and mounting hardware.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf a vehicle’s original exhaust manifold has failed because of low-grade cast iron that warped or cracked under heat and stress, the Dorman 674-522 offers a durable aftermarket replacement. Designed as an OE FIX solution, the kit is reverse engineered from the original part so it installs like the factory piece while using improved metallurgical properties for longer service life.\u003c\/p\u003e\n\n\u003ch3\u003eWhy choose a ductile iron manifold over the original cast iron?\u003c\/h3\u003e\n\u003cp\u003eThe Dorman 674-522 is made from ductile iron, which provides better resistance to thermal cycling and mechanical stress than many stock low-grade cast irons. That means fewer cracks and less warpage over time in high-temperature exhaust environments.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMaterial upgrade: ductile iron for improved toughness and flexibility under heat\u003c\/li\u003e\n  \u003cli\u003eReduced failure risk: less prone to stress cracking and deformation\u003c\/li\u003e\n  \u003cli\u003eConsistent performance: maintains flange flatness for better sealing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat comes in the Dorman 674-522 exhaust manifold kit?\u003c\/h3\u003e\n\u003cp\u003eThis kit includes everything needed to replace the driver-side manifold and reestablish a proper exhaust seal without scavenging parts from the old unit. Hardware and gaskets are provided to simplify installation and reduce the chance of leaks at mating surfaces.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOne driver-side exhaust manifold, prefinished and ready to install\u003c\/li\u003e\n  \u003cli\u003eManifold gasket and flange gasket for secure sealing\u003c\/li\u003e\n  \u003cli\u003eThree studs and three nuts to replace corroded or damaged fasteners\u003c\/li\u003e\n  \u003cli\u003eKit packaged to minimize missing components during repair\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow straightforward is installation and vehicle fitment?\u003c\/h3\u003e\n\u003cp\u003eDorman designs this OE FIX manifold as a direct-fit replacement, reverse engineered from the original unit so it aligns with factory mounting points. While installation complexity varies by vehicle, the included gaskets and hardware reduce the time and parts required for a proper repair.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit design matches original mounting points and exhaust ports\u003c\/li\u003e\n  \u003cli\u003eIncludes necessary gaskets and fasteners to streamline replacement\u003c\/li\u003e\n  \u003cli\u003eRecommended: confirm make, model, and trim in the garage tool for exact compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat quality checks and engineering went into this replacement manifold?\u003c\/h3\u003e\n\u003cp\u003eDorman engineers this replacement in the United States and tests it to ensure it performs to expected standards for fit and durability. The design process focuses on improved materials and manufacturing controls to address common failure modes seen in OE parts.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReverse engineered from the original for accurate fitment\u003c\/li\u003e\n  \u003cli\u003eManufactured with tighter controls to limit casting defects\u003c\/li\u003e\n  \u003cli\u003eTested for dimensional accuracy and sealing performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: If you own a vehicle that shows exhaust leaks, ticking noises from the engine area, or visible manifold cracking, the Dorman 674-522 driver-side exhaust manifold kit is intended for owners and technicians seeking a durable, direct-fit replacement. It’s especially useful for those who want to replace the entire manifold and related hardware in one service interval, avoid scavenging old, corroded fasteners, and upgrade to a more heat-resistant material without altering original installation methods. Before ordering, verify compatibility with your exact year, make, model and trim using the vehicle fitment tool to ensure a correct match and avoid returns.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this kit include the gaskets and bolts?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the Dorman 674-522 kit includes the manifold, manifold gasket, flange gasket, three studs and three nuts for a complete replacement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this part fit my vehicle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Check your make, model, year and trim using the seller's garage fitment tool to confirm compatibility before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":55170548728151,"sku":"B000E35VUC","price":151.75,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/dorman-674-522-front-view.jpg?v=1790430750","url":"https:\/\/britishgarage.co.uk\/products\/dorman-exhaust-manifold-kit-driver-side-674-522-ductile-iron-includes-gaskets-hardware","provider":"British Garage","version":"1.0","type":"link"}