{"product_id":"exhaust-headers-for-dodge-durango-2011-2022-5-7l-v8","title":"Exhaust Headers for Dodge Durango (2011-2022) 5.7L V8","description":"\u003ch2\u003eUpgraded Exhaust Manifolds for 2011-2022 Dodge Durango\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eThis upgraded exhaust manifold set directly replaces the failure-prone OEM cast units on your 5.7L HEMI to eliminate exhaust leaks and sheared mounting hardware.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Durango Thermal Cycling Problem\u003c\/h3\u003e\n\u003cp\u003eThe 5.7L HEMI engines are notorious for exhaust manifold bolt failures. The factory cast-iron manifolds undergo severe thermal cycling under heavy loads, causing substantial thermal expansion and contraction. Over time, this repetitive mechanical stress overcomes the yield strength of the factory mounting bolts, particularly on the rear cylinders, leading to sheared fasteners. Once a bolt shears, the exhaust manifold warps away from the engine block, creating an immediate exhaust leak. This leak introduces unmetered oxygen to the upstream O2 sensors, which negatively skews fuel trims, reduces engine efficiency, causes a persistent ticking noise during cold starts, and risks damaging the cylinder head mounting threads.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eTo permanently cure the HEMI manifold warping issue, these Doctor Diesel USA manifolds are manufactured with a significantly thicker sidewall utilizing high-strength 304 Stainless Steel. Unlike standard factory cast iron, 304 SS maintains superior structural integrity at peak exhaust gas temperatures (EGTs), effectively resisting the torsional stresses that lead to flange warping. Furthermore, the installation hardware incorporates extended fasteners paired with engineered spacers. This critical mechanical design change allows the fasteners to stretch and absorb thermal expansion dynamically without snapping under pressure. Additionally, the heat shield mounting locations have been completely isolated from the primary cylinder head bolts, preventing secondary stress points and ensuring long-term hardware reliability.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e2011-2022 Dodge Durango\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eEngine \/ Chassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e5.7L HEMI Eagle V8 \/ WD\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eStock Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e360 hp \/ 390 lb-ft (Approx)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eOE Interchanges: Left: 68045559AB, 53034137AC, 68045559AA | Right: 5045486AA, 68045560AB, 53034138AC, 68045560AA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2011-2022 Dodge Durango (5.7L HEMI)\u003c\/li\u003e\n  \u003cli\u003e2009-2024 RAM 1500 Classic DS Body Style (5.7L HEMI)\u003c\/li\u003e\n  \u003cli\u003eNOTE: 2019+ RAM Vin Decoder for fitment: If the 6th digit designates the truck model as 6 or 7, it is a RAM 1500 Classic (DS model) and fits.\u003c\/li\u003e\n  \u003cli\u003eNOTE: Will NOT fit the 2019+ DT body style RAM trucks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Dodge Durability Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt for heavy towing and consistent payload duties, these upgraded manifolds restore the consistent power delivery expected from your 5.7L HEMI. Ensure your Durango maintains optimal thermal management and leak-free exhaust flow whether commuting or hauling cross-country.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":48483570483448,"sku":"DS-EVW2LAM98","price":549.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/exhaust-headers-for-dodge-durango-2011-2022-5-7l-v8-1.webp?v=1779403905","url":"https:\/\/performancechiptuning.com\/fr\/products\/exhaust-headers-for-dodge-durango-2011-2022-5-7l-v8","provider":"Performance Chip Tuning","version":"1.0","type":"link"}