{"product_id":"dorman-674-522-exhaust-manifold","title":"Dorman 674-522 Exhaust Manifold - Left","description":"\u003ch2\u003eDorman 674-522 Left Exhaust Manifold\u003c\/h2\u003e\u003cp\u003eDorman 674-522 is a left exhaust manifold replacement for a wide range of Chevrolet, GMC, Cadillac, and Hummer applications. It uses high-grade ductile iron construction to better manage heat and stress than lower-grade OE castings, helping address common manifold cracking and warping concerns.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOE FIX replacement exhaust manifold for the left side\u003c\/li\u003e\n\u003cli\u003eHigh-grade ductile iron construction for improved heat and stress resistance\u003c\/li\u003e\n\u003cli\u003eNatural finish with round port shape\u003c\/li\u003e\n\u003cli\u003eIncludes gasket\/seal components and heat shield\u003c\/li\u003e\n\u003cli\u003eMounting hardware included for installation\u003c\/li\u003e\n\u003cli\u003eDirect replacement for applications such as Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eThis Dorman exhaust manifold is built for drivers replacing a cracked or warped left-side manifold on GM trucks and SUVs. Part number 674-522 is engineered as an OE-style solution for vehicles including Chevrolet Silverado 2500 HD, GMC Sierra 3500 HD, Chevrolet Tahoe, GMC Yukon, and related Express and Savana vans. The cast iron construction, round port design, and included heat shield support a factory-style repair where exhaust sealing and thermal durability matter.\u003c\/p\u003e\u003cp\u003eThis part cross-references ATP 101261 for the same application.\u003c\/p\u003e\u003ch2\u003eCommon Problems It Can Help Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eExhaust leaks from a cracked manifold\u003c\/li\u003e\n\u003cli\u003eTicking or puffing noises at cold start\u003c\/li\u003e\n\u003cli\u003eWarped flange surfaces that affect sealing\u003c\/li\u003e\n\u003cli\u003eBroken or corroded manifold mounting points\u003c\/li\u003e\n\u003cli\u003eHeat-related deterioration on the left exhaust side\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFits the left position only.\u003c\/li\u003e\n\u003cli\u003eReview vehicle-specific notes before ordering, including applications listed as wo\/Air Pump or wo\/Ceramic Coating.\u003c\/li\u003e\n\u003cli\u003eInspect the cylinder head flange, studs, and gasket surfaces before installation.\u003c\/li\u003e\n\u003cli\u003eUse the included gasket and hardware where specified for a complete repair.\u003c\/li\u003e\n\u003cli\u003eConfirm fitment for your exact year, make, model, and engine configuration before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDorman OE FIX replacement parts are built to address common failure points found in original exhaust manifolds. Part number 674-522 uses a durable iron construction and application-specific fitment for confirmed GM truck, SUV, and van coverage.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":44045652197557,"sku":"BKKY-674-522","price":123.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_674522_Fro_224f8ec1-bc71-4f71-92ec-34771b288823.jpg?v=1775010098","url":"https:\/\/www.partcatalog.com\/products\/dorman-674-522-exhaust-manifold","provider":"PartCatalog","version":"1.0","type":"link"}