{"product_id":"exhaust-manifold-for-dodge-ram-2500-3500-2003-2007-5-9l-cummins","title":"Exhaust Manifold for Dodge Ram 2500 3500 (2003-2007) 5.9L Cummins","description":"\u003ch2\u003eHeavy-Duty Cast Exhaust Manifold for 2003-2007 Dodge Ram 2500, 3500 (5.9L Cummins ISB \/ DR Chassis)\u003c\/h2\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Replaces the restrictive and crack-prone factory exhaust manifold to lower EGTs, increase exhaust flow capacity, and accelerate turbo spool times.\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Stock 5.9L Cummins Manifold Failure Point\u003c\/h3\u003e\n  \u003cp\u003eFactory cast iron manifolds on the 5.9L Cummins are notorious for shrinking, warping, and cracking due to intense thermal cycling, particularly when towing heavy loads or running elevated boost pressures. The standard 0.15\" wall thickness lacks the structural integrity to withstand sustained high exhaust gas temperatures (EGTs). This inevitably leads to exhaust leaks at the cylinder head, blown gaskets, and a severe drop in turbine drive pressure. Furthermore, the OEM internal port geometry creates unnecessary turbulence and exhaust backpressure, choking off potential engine efficiency.\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n  \u003cp\u003eThis upgraded manifold utilizes a durable cast ductile iron construction featuring a heavy-duty 0.25\" thick-wall T3 flange design, effectively eliminating the warping and cracking failures inherent to the OEM unit. Structural reinforcing ribs cast directly between the port flanges provide essential rigidity under extreme thermal stress. Internally, matched ports and a merged runner design optimize exhaust pulse-flow dynamics, outflowing the factory manifold by up to 23%. This measurable reduction in exhaust backpressure maximizes turbine efficiency, yielding noticeably quicker turbo spool-up and sharper throttle response. The design also incorporates dual pre-tapped auxiliary ports, allowing mechanics to easily integrate EGT probes or backpressure sensors without drilling.\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;\"\u003e2003-2007 Dodge Ram 2500, 3500\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;\"\u003e5.9L Cummins ISB \/ DR Chassis\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;\"\u003e325 hp \/ 610 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;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n \n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e2003 Dodge Ram 2500 5.9L Cummins Diesel\u003c\/li\u003e\n    \u003cli\u003e2003 Dodge Ram 3500 5.9L Cummins Diesel\u003c\/li\u003e\n    \u003cli\u003e2004 Dodge Ram 2500 5.9L Cummins Diesel\u003c\/li\u003e\n    \u003cli\u003e2004 Dodge Ram 3500 5.9L Cummins Diesel\u003c\/li\u003e\n    \u003cli\u003e2005 Dodge Ram 2500 5.9L Cummins Diesel\u003c\/li\u003e\n    \u003cli\u003e2005 Dodge Ram 3500 5.9L Cummins Diesel\u003c\/li\u003e\n    \u003cli\u003e2006 Dodge Ram 2500 5.9L Cummins Diesel\u003c\/li\u003e\n    \u003cli\u003e2006 Dodge Ram 3500 5.9L Cummins Diesel\u003c\/li\u003e\n    \u003cli\u003e2007 Dodge Ram 2500 5.9L Cummins Diesel\u003c\/li\u003e\n    \u003cli\u003e2007 Dodge Ram 3500 5.9L Cummins Diesel\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eThe Dodge Ram Heavy-Duty Standard\u003c\/h3\u003e\n  \u003cp\u003eEngineered for the rigorous demands of heavy-duty towing and high-boost diesel applications, this upgraded manifold ensures enduring thermal stability and consistent drive pressure, keeping your Cummins on the road and out of the service bay.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":48273675321592,"sku":"DS-EL7JY59D3","price":389.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/exhaust-manifold-for-dodge-ram-2500-3500-2003-2007-5-9l-cummins-2.webp?v=1776984642","url":"https:\/\/performancechiptuning.com\/fr\/products\/exhaust-manifold-for-dodge-ram-2500-3500-2003-2007-5-9l-cummins","provider":"Performance Chip Tuning","version":"1.0","type":"link"}