{"product_id":"catalytic-converter-for-ford-expedition-2005-2006-5-4l-left-right","title":"Catalytic Converter for Ford Expedition (2005-2006) 5.4L Left \u0026 Right","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Replacement Catalytic Converter for 2005-2006 Ford Expedition (U222)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The catalytic converter replaces clogged or degraded emissions hardware on the 2005-2006 Ford Expedition to restore exhaust velocity, eliminate catalyst efficiency DTCs, and maintain OBD II emissions compliance.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Ford Expedition Catalyst Degradation and Exhaust Restriction\u003c\/h3\u003e\n\u003cp\u003eFactory exhaust converters on high-mileage \u003cstrong\u003eU222\u003c\/strong\u003e chassis trucks suffer from severe thermal cycling, oil contamination blow-by, and substrate deterioration. Over time, the internal monolithic honeycombs break down, melt, or plug, causing significant exhaust backpressure that spikes exhaust gas temperatures (EGTs) and starves the \u003cstrong\u003eModular 3V\u003c\/strong\u003e V8 of top-end power. Additionally, micro-cracks in aging OE seam welds induce downstream unmetered oxygen ingress, triggering persistent P0420\/P0430 Diagnostic Trouble Codes and forcing improper air-fuel trim adjustments.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered as a bolt-on solution to OE exhaust geometry, this catalytic converter utilizes an aluminized and stainless steel outer casing that resists road-salt corrosion and high operating temperatures. Inside, a high-flow ceramic substrate is treated with a uniform precious-metal washcoat to chemically convert hydrocarbons, carbon monoxide, and NOx efficiently without constricting exhaust flow. Built with precise mandrel-formed transit sections, factory-spec mounting flanges, and two dedicated oxygen sensor bungs, it maintains precise closed-loop ECM sensor readouts while restoring factory power and throttle response.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e1 × Driver Side Catalytic Converter\u003c\/li\u003e\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;\"\u003e2005-2006 Ford Expedition\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;\"\u003e5.4L Modular 3V \/ U222\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;\"\u003e300 hp \/ 365 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\u003e2005 Ford Expedition 5.4L V8 (Left \/ Driver Side)\u003c\/li\u003e\n\u003cli\u003e2006 Ford Expedition 5.4L V8 (Left \/ Driver Side)\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 U222 Expedition?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2005-2006 Ford Expedition equipped with the \u003cstrong\u003eModular 3V\u003c\/strong\u003e 5.4L engine. \u003cstrong\u003eNote: This part is 46-state legal and cannot be shipped to or registered in California, New York, Colorado, or Maine.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eDoes this catalytic converter require custom welding or ECM tuning?\u003c\/h4\u003e\n\u003cp\u003eNo, this direct-fit unit matches factory flange and O2 bung locations for direct bolt-on installation without tuning requirements or exhaust pipe modifications.\u003c\/p\u003e\n\n\u003ch3\u003eThe Ford Expedition Heavy-Duty Durability\u003c\/h3\u003e\n\u003cp\u003eEngineered for full-size hauling and severe-duty towing cycles, this replacement converter ensures that your \u003cstrong\u003eU222\u003c\/strong\u003e truck maintains optimal exhaust scavenging and low backpressure under load, keeping exhaust gas temperatures controlled whether pulling trailers or enduring daily highway use.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67915332583672,"sku":"DS-ESRDXN0IK","price":284.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-ford-expedition-2005-2006-5-4l-left-right-1.jpg?v=1793463958","url":"https:\/\/performancechiptuning.com\/products\/catalytic-converter-for-ford-expedition-2005-2006-5-4l-left-right","provider":"Performance Chip Tuning","version":"1.0","type":"link"}