{"product_id":"dorman-674-656-exhaust-manifold","title":"Dorman 674-656 Exhaust Manifold - Rear","description":"\u003ch2\u003eOverview of Dorman 674-656 Exhaust Manifold\u003c\/h2\u003e\u003cp\u003eThe Dorman 674-656 exhaust manifold is designed for reliable performance and durability in select Buick, Oldsmobile, and Pontiac vehicles. Constructed from stainless steel with a natural finish, this exhaust manifold offers a solid replacement option for models such as the Buick LeSabre, Oldsmobile 88, and Pontiac Bonneville.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMade from durable stainless steel material\u003c\/li\u003e\n\u003cli\u003eNatural color finish for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eRound port shape for optimal exhaust flow\u003c\/li\u003e\n\u003cli\u003eIncludes mounting hardware for straightforward installation\u003c\/li\u003e\n\u003cli\u003eComes with exhaust and flange gaskets to ensure a proper seal\u003c\/li\u003e\n\u003cli\u003eHeat shield included to protect surrounding components\u003c\/li\u003e\n\u003cli\u003eCompatible with Buick, Oldsmobile, and Pontiac models including 88, 98, Bonneville, LeSabre, Park Avenue, Reatta, Riviera, and Toronado\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis Dorman exhaust manifold (part number 674-656) is engineered with stainless steel to resist rust and withstand high temperatures typical of exhaust systems. The natural finish helps maintain the integrity of the manifold over time. Featuring a round port shape, it is designed to match the original equipment specifications for a proper fit and efficient exhaust gas flow. The package includes all necessary mounting hardware, such as two studs, along with an exhaust manifold gasket and a flange gasket to ensure a secure and leak-free installation. Additionally, the included heat shield helps protect adjacent engine components from excessive heat exposure.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis exhaust manifold is compatible with a range of Buick, Oldsmobile, and Pontiac vehicles, including:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBuick LeSabre and Park Avenue\u003c\/li\u003e\n\u003cli\u003eOldsmobile 88 and 98\u003c\/li\u003e\n\u003cli\u003ePontiac Bonneville, Reatta, Riviera, and Toronado\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIt is designed to meet the specific exhaust routing and mounting requirements of these models, making it a suitable replacement part for maintenance or repair.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by This Exhaust Manifold\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eExhaust leaks caused by cracked or warped manifolds\u003c\/li\u003e\n\u003cli\u003eCorrosion damage from rusted original manifolds\u003c\/li\u003e\n\u003cli\u003eReduced engine performance due to exhaust flow restrictions\u003c\/li\u003e\n\u003cli\u003eExcessive engine bay heat without proper shielding\u003c\/li\u003e\n\u003cli\u003eFailed gaskets leading to exhaust noise and emissions problems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstallation of the Dorman 674-656 exhaust manifold should be performed with care to ensure proper sealing and fitment. It is recommended to:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUse the included gaskets and mounting hardware to prevent leaks\u003c\/li\u003e\n\u003cli\u003eInspect the exhaust ports and clean mating surfaces before installation\u003c\/li\u003e\n\u003cli\u003eTorque mounting bolts to manufacturer specifications\u003c\/li\u003e\n\u003cli\u003eCheck heat shield placement to avoid contact with wiring or hoses\u003c\/li\u003e\n\u003cli\u003eVerify compatibility with your specific vehicle model and engine configuration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman manufactures this exhaust manifold to meet regular grade standards, ensuring consistent quality and durability. The part number 674-656 undergoes quality checks to comply with OEM fit and function requirements. This product includes a limited warranty covering defects in materials and workmanship, providing confidence in its long-term reliability when installed correctly.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":44054799909045,"sku":"BKKY-674-656","price":764.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_674656_Fro.jpg?v=1775010126","url":"https:\/\/www.partcatalog.com\/products\/dorman-674-656-exhaust-manifold","provider":"PartCatalog","version":"1.0","type":"link"}