{"product_id":"catalytic-converter-for-toyota-4runner-2003-2004-4-7l-left-right","title":"Catalytic Converter for Toyota 4Runner (2003-2004) 4.7L Left \u0026 Right","description":"\u003ch2\u003eDirect-Fit Left \u0026amp; Right Catalytic Converter Set for 2003-2004 Toyota 4Runner\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Direct-Fit Left and Right Catalytic Converter Set replaces deteriorated factory emissions units on the 2003-2004 4Runner to resolve catalyst efficiency check engine lights and restore proper exhaust flow.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Toyota 4Runner Catalyst Degradation and Exhaust Restriction\u003c\/h3\u003e\n\u003cp\u003eOver extended operating hours, the factory ceramic substrate inside the \u003cstrong\u003eN210\u003c\/strong\u003e exhaust assembly suffers from thermal degradation, washcoat erosion, and sintering of critical precious metals. In the \u003cstrong\u003e2UZ-FE\u003c\/strong\u003e 4.7L V8, unburned hydrocarbons and thermal cycling frequently cause internal cell collapse or clogging. This structural failure triggers persistent P0420 and P0430 DTCs, restricts cylinder evacuation, raises exhaust gas temperatures (EGTs), and robs the engine of mid-range torque under heavy towing loads.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered as a bolt-on replacement for the \u003cstrong\u003eN210\u003c\/strong\u003e platform, this dual converter set features heavy-gauge stainless steel outer shells that resist corrosion, road salt, and off-road impacts. Inside, high-porosity ceramic monolith substrates are engineered for maximum flow and surface area exposure, restoring rapid catalytic light-off and thorough hydrocarbon oxidation. Laser-cut OE-spec mounting flanges and included hardware eliminate the need for custom cutting or welding, ensuring leak-free mating directly to factory exhaust manifolds and intermediate pipes.\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; margin-bottom: 20px;\"\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;\"\u003e2003-2004 Toyota 4Runner\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\u003e2UZ-FE\u003c\/strong\u003e \/ \u003cstrong\u003eN210\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;\"\u003e235 hp \/ 320 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\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2003 Toyota 4Runner SR5 4.7L V8 (2UZ-FE \/ N210)\u003c\/li\u003e\n  \u003cli\u003e2003 Toyota 4Runner Limited 4.7L V8 (2UZ-FE \/ N210)\u003c\/li\u003e\n  \u003cli\u003e2004 Toyota 4Runner SR5 4.7L V8 (2UZ-FE \/ N210)\u003c\/li\u003e\n  \u003cli\u003e2004 Toyota 4Runner Sport Edition 4.7L V8 (2UZ-FE \/ N210)\u003c\/li\u003e\n  \u003cli\u003e2004 Toyota 4Runner Limited 4.7L V8 (2UZ-FE \/ N210)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the N210 4Runner?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2003-2004 Toyota 4Runner equipped with the \u003cstrong\u003e2UZ-FE\u003c\/strong\u003e engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this converter set resolve my P0420 and P0430 trouble codes?\u003c\/strong\u003e\u003cbr\u003e Yes, provided upstream oxygen sensors and fueling systems function within spec, these new catalytic cores restore factory emissions reduction efficiency to clear catalyst codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Toyota Heavy-Duty Durability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle sustained mountain grades, towing loads, and harsh off-camber chassis vibrations, this direct-fit stainless converter assembly protects the legendary reliability and long-haul durability of your V8 4Runner.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50502189646072,"sku":"DS-EJI82MCIW","price":641.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-toyota-4runner-2003-2004-4-7l-left-right-1.jpg?v=1789338835","url":"https:\/\/performancechiptuning.com\/products\/catalytic-converter-for-toyota-4runner-2003-2004-4-7l-left-right","provider":"Performance Chip Tuning","version":"1.0","type":"link"}