{"product_id":"catalytic-converter-for-lexus-rx400h-2006-2008-3-3l","title":"Catalytic Converter for Lexus RX400h (2006-2008) 3.3L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Catalytic Converter for 2006-2008 Lexus RX (MHU38)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The catalytic converter replaces depleted or physically fractured emissions components on the 2006-2008 RX to resolve catalyst efficiency DTCs, silence substrate rattles, and restore factory exhaust flow.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Lexus RX Catalyst Washcoat Degradation\u003c\/h3\u003e\n\u003cp\u003eThe factory catalytic converter on the \u003cstrong\u003eMHU38\u003c\/strong\u003e Lexus RX400h undergoes severe thermal cycling caused by frequent internal combustion engine start-stop sequences managed by the \u003cstrong\u003e3MZ-FE\u003c\/strong\u003e Hybrid Synergy Drive system. Over extended mileage, rapid heat fluctuation fractures the internal ceramic monolith or sinters the precious metal washcoat, degrading catalytic efficiency. This breakdown generates unmetered exhaust restriction, causes broken substrate blocks to rattle inside the shell under load, and triggers persistent downstream diagnostic trouble codes such as \u003cstrong\u003eP0420\u003c\/strong\u003e and \u003cstrong\u003eP0430\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered as a bolt-on replacement, this direct-fit unit features a durable 409 stainless steel outer casing and precision TIG-welded tubing that resist thermal fatigue and corrosion. Inside, a high-flow ceramic honeycomb substrate coated with an active precious-metal washcoat rapidly catalyzes hydrocarbons, carbon monoxide, and oxides of nitrogen into harmless gases. Factory-positioned oxygen sensor bungs and heavy-gauge OE-style mating flanges ensure complete alignment with original hangers and downpipes without cutting, bending, or welding.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Direct-Fit Catalytic Converter\u003c\/li\u003e\n  \u003cli\u003eExhaust Gasket(s)\u003c\/li\u003e\n  \u003cli\u003eMounting Hardware\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;\"\u003e2006-2008 Lexus RX\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;\"\u003e3MZ-FE \/ MHU38\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;\"\u003e268 hp \/ 212 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;\"\u003e16660\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\u003e2006 Lexus RX400h Base 3.3L V6 Hybrid\u003c\/li\u003e\n  \u003cli\u003e2007 Lexus RX400h Base 3.3L V6 Hybrid\u003c\/li\u003e\n  \u003cli\u003e2008 Lexus RX400h Base 3.3L V6 Hybrid\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 MHU38 RX?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2006-2008 Lexus RX equipped with the \u003cstrong\u003e3MZ-FE\u003c\/strong\u003e 3.3L hybrid engine. \u003cstrong\u003eNote: This EPA 49-state compliant unit is not legal for sale or operation on vehicles registered in California or CARB-adopting states.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eWill this resolve active P0420\/P0430 codes?\u003c\/h4\u003e\n\u003cp\u003eYes, replacing an exhausted catalyst core with this fresh substrate restores conversion efficiency, stabilizing downstream O2 sensor voltage readings to eliminate diagnostic trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Lexus Refinement Standard\u003c\/h3\u003e\n\u003cp\u003ePreserve the smooth, silent operation and emissions compliance expected of your luxury hybrid platform without sacrificing engine performance or factory fitment tolerances.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67911317094648,"sku":"DS-E8M5O9K6T","price":156.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-lexus-rx400h-2006-2008-3-3l-1.jpg?v=1793400213","url":"https:\/\/performancechiptuning.com\/fr\/products\/catalytic-converter-for-lexus-rx400h-2006-2008-3-3l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}