{"product_id":"dorman-674-858-exhaust-manifold","title":"Dorman 674-858 Exhaust Manifold - Right","description":"\u003ch2\u003eDorman 674-858 Exhaust Manifold\u003c\/h2\u003e\u003cp\u003eDorman 674-858 is a cast iron exhaust manifold built to match the fit and function of the original manifold on specified vehicles. It includes the manifold gasket, heat shield, and downpipe hardware needed for a complete exhaust manifold repair.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCast iron construction for durable exhaust service\u003c\/li\u003e\n\u003cli\u003eNatural finish with round port shape\u003c\/li\u003e\n\u003cli\u003eIncludes gasket and heat shield\u003c\/li\u003e\n\u003cli\u003ePackage contents: exhaust manifold, 1 manifold gasket, 3 studs, and 3 nuts\u003c\/li\u003e\n\u003cli\u003ePrecision-engineered replacement for OE-style fitment\u003c\/li\u003e\n\u003cli\u003eCross-references OE part numbers 101470 and 12570670 for the same application\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eThis Dorman exhaust manifold, part number 674-858, is engineered as a direct replacement for the original manifold on specified vehicles. The cast iron body helps maintain structural integrity under high exhaust temperatures, while the round port design supports proper exhaust flow at the cylinder head. For buyers searching for a replacement exhaust manifold for Chevrolet and GMC applications, 674-858 provides the core components needed to restore a leaking, cracked, or warped manifold assembly.\u003c\/p\u003e\u003cp\u003eBecause this manifold includes the gasket, heat shield, and downpipe hardware, it supports a more complete repair on vehicles that need an OE-style exhaust manifold replacement. If you are sourcing a Dorman 674-858 exhaust manifold for Chevrolet or GMC repair work, this part is built around the original fit and function requirements of the application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Repair\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eExhaust leaks at the manifold-to-cylinder-head sealing surface\u003c\/li\u003e\n\u003cli\u003eCracked or warped cast manifold housings\u003c\/li\u003e\n\u003cli\u003eBroken or missing manifold mounting hardware\u003c\/li\u003e\n\u003cli\u003eNoise from a leaking exhaust manifold assembly\u003c\/li\u003e\n\u003cli\u003eHeat-related damage around the manifold area\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the manifold port shape, mounting points, and engine-side layout before installation. Clean the cylinder-head sealing surface thoroughly and replace any damaged fasteners or mating components as needed. Follow factory torque specifications and tighten hardware in the recommended sequence to help prevent sealing issues after installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDorman manufactures this manifold to match original fit and function on specified vehicles. The part number 674-858 is built for regular-duty service and is supplied with the gasket and heat shield called out in the product specifications.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":44054904701109,"sku":"BKKY-674-858","price":190.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_674858_Fro.jpg?v=1775010155","url":"https:\/\/www.partcatalog.com\/products\/dorman-674-858-exhaust-manifold","provider":"PartCatalog","version":"1.0","type":"link"}