{"product_id":"exhaust-headers-for-mercedes-benz-sl500-2003-2006-5-0l-v8","title":"Exhaust Headers for Mercedes Benz SL500 (2003-2006) 5.0L V8","description":"\u003ch2\u003eHigh-Flow Mid-Length Exhaust Headers for 2003-2006 Mercedes Benz SL-Class (M113 \/ R230)\u003c\/h2\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eDesigned for competition use, these mid-length exhaust headers replace restrictive factory manifolds to reduce exhaust gas backpressure and maximize volumetric efficiency.\u003c\/strong\u003e\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Stock SL-Class Exhaust Restriction\u003c\/h3\u003e\n  \u003cp\u003eThe OEM cast iron exhaust manifolds on the M113 5.0L V8 and supercharged AMG variants are engineered for mass production and noise suppression, rather than maximum flow. The factory cast log design suffers from severe flow disruption, creating localized heat zones and excessive exhaust backpressure. This high backpressure traps hot exhaust gases in the cylinder chamber during the overlap phase, severely limiting the engine's ability to pull in a fresh, dense intake charge. Over time, this exhaust restriction chokes top-end horsepower and torque, leaving significant mechanical performance on the table, especially in forced-induction or heavily modified naturally aspirated configurations.\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n  \u003cp\u003eThese mid-length headers utilize wider, high-flow primary tubes designed to dramatically reduce exhaust backpressure and optimize exhaust scavenging. By maintaining exhaust gas velocity while expanding overall volume capacity, the headers allow the M113 engine to breathe freely and operate at lower exhaust gas temperatures. A naturally aspirated 5.0L V8 typically yields a 7 to 10 percent gain in horsepower and torque, while supercharged AMG platforms can see gains up to 15 percent. The mid-length runner design optimizes mid-range torque without sacrificing high-rpm horsepower. \u003cstrong\u003eInstallation Notice:\u003c\/strong\u003e These header kits include downpipes but require custom fabrication. They must be welded to your existing exhaust system. Due to the universal tube routing, specific chassis constraints apply, such as tight clearances around the R230 transmission tunnel.\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;\"\u003e2003-2006 Mercedes Benz SL-Class\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;\"\u003eM113 5.0L V8 \/ R230\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;\"\u003e302 hp \/ 339 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\u003eFits LHD and RHD vehicles\u003c\/li\u003e\n    \u003cli\u003eFor Mercedes-Benz SL55 AMG\u003c\/li\u003e\n    \u003cli\u003eFor Mercedes-Benz CLS55 AMG\u003c\/li\u003e\n    \u003cli\u003eFor Mercedes-Benz E55 AMG\u003c\/li\u003e\n    \u003cli\u003eFor Mercedes-Benz C55 AMG\u003c\/li\u003e\n    \u003cli\u003eFor Mercedes-Benz SL500 AMG\u003c\/li\u003e\n    \u003cli\u003eFor Mercedes-Benz CLS500 AMG\u003c\/li\u003e\n    \u003cli\u003eFor Mercedes-Benz E500 AMG\u003c\/li\u003e\n    \u003cli\u003e\u003cem\u003eNotice - Not designed per chassis. Known constraints:\u003c\/em\u003e\u003c\/li\u003e\n    \u003cli\u003eW211 (E-Class) → steering shaft interference common\u003c\/li\u003e\n    \u003cli\u003eW220 \/ C215 (S \/ CL) → subframe clearance issues\u003c\/li\u003e\n    \u003cli\u003eR230 (SL) → tight around transmission tunnel\u003c\/li\u003e\n    \u003cli\u003eW203 (C55 AMG) → extremely tight engine bay\u003c\/li\u003e\n    \u003cli\u003e\u003cstrong\u003eCOMPETITION USE ONLY - Not for highway or non-competition off-road purposes.\u003c\/strong\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eThe Mercedes Benz Performance Caliber\u003c\/h3\u003e\n  \u003cp\u003eUpgrading the R230 chassis with high-flow tubular manifolds ensures the M113 engine delivers the aggressive exhaust note, throttle response, and raw power characteristic of a true European grand tourer, maximizing potential for track-day applications.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":48299713593592,"sku":"DS-EUUCZV0YV","price":589.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/exhaust-headers-for-mercedes-benz-sl500-2003-2006-5-0l-v8-1.jpg?v=1777522020","url":"https:\/\/performancechiptuning.com\/fr\/products\/exhaust-headers-for-mercedes-benz-sl500-2003-2006-5-0l-v8","provider":"Performance Chip Tuning","version":"1.0","type":"link"}