{"product_id":"catalytic-converter-for-ford-freestar-2004-2007-3-9l-4-2l-rear","title":"Catalytic Converter for Ford Freestar (2004-2007) 3.9L\/4.2L Rear","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Rear Catalytic Converter for 2004-2007 Ford Freestar (V364)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The rear catalytic converter treats secondary exhaust gases on the 2004-2007 Ford Freestar to eliminate P0420\/P0430 DTC codes and restore factory emissions compliance without restricting exhaust flow.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Ford Freestar Catalyst Deterioration and Thermal Fatigue\u003c\/h3\u003e\n\u003cp\u003eFactory rear catalytic converters on the \u003cstrong\u003eFord Freestar\u003c\/strong\u003e paired with high-displacement \u003cstrong\u003eFord Essex V6\u003c\/strong\u003e engines suffer from progressive thermal fatigue and internal washcoat depletion. Prolonged exposure to unburned hydrocarbons and thermal cycling degrades the OEM ceramic core, leading to structural sintering, internal matrix crumbling, and elevated exhaust backpressure. This degradation directly impedes downstream exhaust scavenge, causes persistent downstream O2 sensor fault codes, and chokes mid-range torque under heavy vehicle loads.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eConstructed with a heavy-gauge, corrosion-resistant stainless steel outer casing, this direct-fit rear catalytic converter restores structural integrity and proper flow dynamics. The internal assembly utilizes an engineered ceramic honeycomb substrate coated with a high-load precious-metal washcoat, ensuring optimal chemical reduction of NOx, CO, and HC emissions. Precision-stamped factory flanges and pre-positioned, welded sensor bungs guarantee exact alignment with the OEM exhaust routing, ensuring leak-free sealing without the need for custom pipe cutting or welding.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1x Rear direct-fit catalytic converter assembly\u003c\/li\u003e\n\u003c\/ul\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;\"\u003e2004-2007 Ford Freestar\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;\"\u003e3.9L \/ 4.2L Essex V6 \/ V364\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;\"\u003e193-201 hp \/ 240-263 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;\"\u003eN\/A\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\u003e2004 Ford Freestar 3.9L \/ 4.2L V6 (Rear)\u003c\/li\u003e\n  \u003cli\u003e2005 Ford Freestar 3.9L \/ 4.2L V6 (Rear)\u003c\/li\u003e\n  \u003cli\u003e2006 Ford Freestar 3.9L \/ 4.2L V6 (Rear)\u003c\/li\u003e\n  \u003cli\u003e2007 Ford Freestar 3.9L \/ 4.2L V6 (Rear)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the V364 Freestar?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2004-2007 Ford Freestar equipped with the \u003cstrong\u003e3.9L or 4.2L Essex V6\u003c\/strong\u003e engine in the rear position. \u003cstrong\u003eEPA 49-state compliant only; not legal for sale or use in California, New York, Maine, or other CARB-mandated emissions states.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eDoes this replacement require cutting or welding?\u003c\/h4\u003e\n\u003cp\u003eNo, this assembly matches factory flange dimensions and uses existing hanger positions for standard bolt-on installation.\u003c\/p\u003e\n\n\u003ch3\u003eThe Ford Durability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle sustained thermal cycles and continuous duty hauling, this exhaust replacement delivers OEM-level clearance, vibration resistance, and long-term emission compliance.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67916075630840,"sku":"DS-EZ5E9L4CJ","price":396.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-ford-freestar-2004-2007-3-9l-4-2l-rear-1.jpg?v=1793472477","url":"https:\/\/performancechiptuning.com\/products\/catalytic-converter-for-ford-freestar-2004-2007-3-9l-4-2l-rear","provider":"Performance Chip Tuning","version":"1.0","type":"link"}