{"product_id":"catalytic-converter-for-ford-mustang-2005-2010-4-0l-rear","title":"Catalytic Converter for Ford Mustang (2005-2010) 4.0L Rear","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Rear Catalytic Converter for 2005-2010 Ford Mustang (S197)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The rear catalytic converter assembly replaces degraded or clogged downstream catalyst units on the 2005-2010 Mustang to restore exhaust velocity, eliminate catalyst efficiency trouble codes, and ensure legal tailpipe emissions.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Ford Mustang Catalyst Substrate Deterioration\u003c\/h3\u003e\n\u003cp\u003eFactory catalytic converters on the \u003cstrong\u003eS197\u003c\/strong\u003e platform face severe thermal cycling and carbon contamination over extended mileage. On the \u003cstrong\u003e4.0L Cologne V6\u003c\/strong\u003e, continuous heat soak degrades the internal washcoat, causing precious metal sintering and internal ceramic matrix breakdown. As the stock substrate breaks or melts, it generates excessive exhaust backpressure, restricts scavenging dynamics, chokes top-end horsepower, and triggers downstream P0420\/P0430 diagnostic trouble codes across the PCM.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis direct-replacement rear assembly resolves exhaust restriction using a durable aluminized steel outer casing that provides robust corrosion resistance and high structural rigidity against road debris. Inside, an advanced ceramic honeycomb monolith coated with active catalytic washcoat materials maximizes surface area contact to effectively oxidize hydrocarbons and carbon monoxide without choking laminar exhaust gas velocity. The assembly features precision OE-spec mounting flanges and integrated O2 sensor bungs, eliminating the need for cutting or custom fabrication while directly bolting up to stock hanger locations.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2005-2010 Ford Mustang\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003e4.0L Cologne V6\u003c\/strong\u003e \/ \u003cstrong\u003eS197\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e210 hp \/ 240 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003e30542\u003c\/strong\u003e, \u003cstrong\u003e19327\u003c\/strong\u003e, \u003cstrong\u003e20697\u003c\/strong\u003e, \u003cstrong\u003e4321\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2005 Ford Mustang Base 4.0L V6 - Rear\u003c\/li\u003e\n  \u003cli\u003e2006 Ford Mustang Base 4.0L V6 - Rear\u003c\/li\u003e\n  \u003cli\u003e2007 Ford Mustang Base 4.0L V6 - Rear\u003c\/li\u003e\n  \u003cli\u003e2008 Ford Mustang Base 4.0L V6 - Rear\u003c\/li\u003e\n  \u003cli\u003e2009 Ford Mustang Base 4.0L V6 - Rear\u003c\/li\u003e\n  \u003cli\u003e2010 Ford Mustang Base 4.0L V6 - Rear\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the S197 Mustang?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2005-2010 Ford Mustang equipped with the \u003cstrong\u003e4.0L Cologne V6\u003c\/strong\u003e engine in the rear position.\u003c\/p\u003e\n\n\u003ch4\u003eWill this unit clear downstream catalyst efficiency DTCs like P0420 and P0430?\u003c\/h4\u003e\n\u003cp\u003eYes, providing upstream air-fuel ratios and sensors are operating normally, this unit restores proper catalytic conversion rates to extinguish emissions check engine lights.\u003c\/p\u003e\n\n\u003ch3\u003eThe Ford Mustang Muscle Caliber\u003c\/h3\u003e\n\u003cp\u003eEngineered to withstand aggressive exhaust temperatures and dynamic engine loads, this catalytic converter maintains optimal backpressure balance to preserve the factory torque band and aggressive exhaust cadence of your V6 Mustang.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67537911644408,"sku":"DS-E7CBVNV85","price":207.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-ford-mustang-2005-2010-4-0l-rear-1.jpg?v=1790619626","url":"https:\/\/performancechiptuning.com\/es\/products\/catalytic-converter-for-ford-mustang-2005-2010-4-0l-rear","provider":"Performance Chip Tuning","version":"1.0","type":"link"}