{"product_id":"catalytic-converter-for-ford-f-150-2004-2005-5-4l-left-right","title":"Catalytic Converter for Ford F-150 (2004-2005) 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 Set for 2004-2005 Ford F-150 (P221)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The catalytic converter set replaces deteriorated factory emissions units on the 2004-2005 Ford F-150 to restore exhaust gas velocity, resolve catalytic inefficiency trouble codes, and ensure federal emissions compliance.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Ford F-150 Exhaust Substrate Deterioration\u003c\/h3\u003e\n\u003cp\u003eFactory catalytic converters on the \u003cstrong\u003eP221\u003c\/strong\u003e chassis F-150 are prone to structural breakdown over sustained thermal cycles. High exhaust gas temperatures combined with the notorious misfire and unburnt fuel cycles common on the \u003cstrong\u003e5.4L Triton 3V\u003c\/strong\u003e engine degrade the washcoat and cause internal ceramic honeycomb meltdown. This deterioration leads to exhaust restriction, severe backpressure, diminished low-end torque, and inevitable P0420\/P0430 onboard diagnostic trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis direct-fit left and right assembly is engineered with a corrosion-resistant stainless steel outer casing and a high-flow ceramic substrate formulated with precious-metal catalyst loading. Precision-aligned factory-style inlet and outlet flanges eliminate the need for cutting or custom fabrication, ensuring an airtight seal that withstands heavy-duty thermal expansion during sustained engine load and towing operations.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1x Catalytic Converter Set (Bank 1 and Bank 2 \/ Left and Right)\u003c\/li\u003e\n  \u003cli\u003eBolts\u003c\/li\u003e\n  \u003cli\u003eScrews\u003c\/li\u003e\n  \u003cli\u003eSeal\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;\"\u003e2004-2005 Ford F-150\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 Triton 3V \/ P221\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;\"\u003e645217, 645218\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\u003e2004-2005 Ford F-150 (XL, XLT, Lariat, FX4, King Ranch) 5.4L V8\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 P221 F-150?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2004-2005 Ford F-150 equipped with the \u003cstrong\u003e5.4L Triton 3V\u003c\/strong\u003e engine; it does not fit models equipped with the 4.2L V6 or 4.6L V8 engines, nor 2004 Heritage models.\u003c\/p\u003e\n\n\u003ch4\u003eIs this catalytic converter legal in California or New York?\u003c\/h4\u003e\n\u003cp\u003eNo, this unit is EPA compliant for Federal emissions standards and is not legal for sale, installation, or use on vehicles registered in California or New York.\u003c\/p\u003e\n\n\u003ch3\u003eThe Ford Workhorse Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt to handle the harsh duty cycles of half-ton towing and high payload stress, this converter assembly restores critical exhaust scavenging without compromising low-end torque or triggering downstream oxygen sensor faults.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67564531384568,"sku":"DS-EYHQ3DNIZ","price":214.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-ford-f-150-2004-2005-5-4l-left-right-1.jpg?v=1791041441","url":"https:\/\/performancechiptuning.com\/de\/products\/catalytic-converter-for-ford-f-150-2004-2005-5-4l-left-right","provider":"Performance Chip Tuning","version":"1.0","type":"link"}