{"product_id":"catalytic-converter-for-lexus-es-2004-2006-3-3l-rear","title":"Catalytic Converter for Lexus ES (2004-2006) 3.3L Rear","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Rear Catalytic Converter for 2004-2006 Lexus ES (MCV31)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Rear Catalytic Converter with Flex Y-Pipe replaces the degraded stock emissions assembly on the 2004-2006 Lexus ES to eliminate catalyst efficiency codes, stop exhaust leaks, and restore uninhibited exhaust scavenging.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Lexus ES Exhaust Degradation\u003c\/h3\u003e\n\u003cp\u003eOn the aging \u003cstrong\u003eMCV31\u003c\/strong\u003e chassis, cyclic engine movement and thermal stress routinely compromise the factory exhaust assembly. The OEM flex bellows fatigue and tear, introducing unmetered atmospheric oxygen into the downstream sensor stream. Simultaneously, sustained thermal cycling breaks down the original ceramic washcoat inside the converter, causing internal substrate sintering, increased exhaust backpressure, and persistent P0420\/P0430 diagnostic trouble codes that degrade fuel efficiency and throttle response on the \u003cstrong\u003e3MZ-FE\u003c\/strong\u003e engine.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis direct-fit assembly rectifies downstream flow restrictions with a mandrel-formed, corrosion-resistant stainless steel body and an upgraded dual-braided flex section engineered to withstand torsional engine shudder. Inside, a high-efficiency ceramic honeycomb substrate utilizes balanced precious metal washcoats to ensure rapid light-off and optimal catalytic conversion. Precision-cut, thick-gauge mounting flanges provide a leak-free mechanical seal against factory manifolds and intermediate pipes, matching OEM references \u003cstrong\u003e643072\u003c\/strong\u003e and \u003cstrong\u003e40665\u003c\/strong\u003e without cutting or custom welding.\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;\"\u003e2004-2006 Lexus ES\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\u003e3MZ-FE\u003c\/strong\u003e \/ \u003cstrong\u003eMCV31\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;\"\u003e225 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;\"\u003e643072, 40665\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 Lexus ES 330 (3.3L V6 3MZ-FE, MCV31) - Rear Position\u003c\/li\u003e\n  \u003cli\u003e2005 Lexus ES 330 (3.3L V6 3MZ-FE, MCV31) - Rear Position\u003c\/li\u003e\n  \u003cli\u003e2006 Lexus ES 330 (3.3L V6 3MZ-FE, MCV31) - Rear Position\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the MCV31 ES?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2004-2006 Lexus ES equipped with the \u003cstrong\u003e3MZ-FE\u003c\/strong\u003e 3.3L V6 engine.\u003c\/p\u003e\n\n\u003ch4\u003eWill this unit resolve catalyst efficiency check engine lights?\u003c\/h4\u003e\n\u003cp\u003eYes, the high-density ceramic substrate restores clean catalytic reduction to eliminate downstream P0420 and P0430 DTCs.\u003c\/p\u003e\n\n\u003ch3\u003eThe Lexus Refinement Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to preserve the whisper-quiet acoustic cabin and smooth torque curve of your \u003cstrong\u003eMCV31\u003c\/strong\u003e sedan, this replacement ensures reliable emissions compliance without unwanted exhaust drone or cabin vibration.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67537739186424,"sku":"DS-EY731J3X2","price":217.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-lexus-es-2004-2006-3-3l-rear-1.jpg?v=1790616568","url":"https:\/\/performancechiptuning.com\/fr\/products\/catalytic-converter-for-lexus-es-2004-2006-3-3l-rear","provider":"Performance Chip Tuning","version":"1.0","type":"link"}