{"product_id":"catalytic-converter-for-lexus-is250-2006-2015-2-5l-awd-bank-1-bank-2","title":"Catalytic Converter for Lexus IS250 (2006-2015) 2.5L AWD Bank 1 \u0026 Bank 2","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Manifold Catalytic Converter Set for 2006-2015 Lexus IS250 (GSE25)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The direct-fit manifold catalytic converter set replaces degraded factory emissions assemblies on the 2006-2015 Lexus IS250 AWD to eliminate P0420\/P0430 DTCs and restore balanced exhaust scavenging.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Lexus IS250 Catalytic Substrate Degradation\u003c\/h3\u003e\n\u003cp\u003eThe OEM manifold converters on the direct-injected \u003cstrong\u003e4GR-FSE\u003c\/strong\u003e engine endure immense thermal stress due to their close-coupled location directly off the cylinder heads. Over extended mileage, rapid heat cycling and direct-injection combustion byproducts cause the factory ceramic washcoat to deteriorate and the monolith matrix to clog or break apart. This thermal fatigue leads to restricted exhaust gas velocity, sluggish engine response, structural weld fissures, and persistent catalyst system efficiency trouble codes (P0420 and P0430).\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis Bank 1 and Bank 2 replacement set is fabricated from heavy-gauge \u003cstrong\u003estainless steel\u003c\/strong\u003e with reinforced manifold collector branches to prevent heat-stress cracking and warping. Internally, high-flow \u003cstrong\u003eceramic substrates\u003c\/strong\u003e coated with precious metals ensure complete catalytic reduction of emissions while preserving exhaust flow dynamics. Precise robotic welds, factory-positioned oxygen sensor bungs, and precision-stamped direct-mount flanges allow straightforward installation around the front differential and transfer case clearance points of the \u003cstrong\u003eGSE25\u003c\/strong\u003e all-wheel-drive platform.\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;\"\u003e2006-2015 Lexus IS250 AWD\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\u003e4GR-FSE\u003c\/strong\u003e \/ \u003cstrong\u003eGSE25\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;\"\u003e204 hp \/ 185 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;\"\u003e\n\u003cstrong\u003e16633\u003c\/strong\u003e, \u003cstrong\u003e16635\u003c\/strong\u003e, QS322208QR\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\u003e2006-2015 Lexus IS250 Base AWD 2.5L V6 (Bank 1 \u0026amp; Bank 2 Manifold Catalytic Converters)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the GSE25 IS250?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2006-2015 Lexus IS250 equipped with the \u003cstrong\u003e4GR-FSE\u003c\/strong\u003e engine and all-wheel drive.\u003c\/p\u003e\n\n\u003ch4\u003eWill this clear catalyst efficiency trouble codes like P0420 and P0430?\u003c\/h4\u003e\n\u003cp\u003eYes, replacing depleted factory converters with fresh catalytic substrates resolves active P0420 and P0430 codes when installed with functioning O2 sensors.\u003c\/p\u003e\n\n\u003ch3\u003eThe Lexus Engineering Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to preserve smooth power delivery and cabin acoustic refinement, these manifold units restore correct exhaust backpressure profiles on your \u003cstrong\u003e4GR-FSE\u003c\/strong\u003e V6 without introducing exhaust drone or chassis vibration.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67543947739384,"sku":"DS-EAAW91G8T","price":177.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-lexus-is250-2006-2015-2-5l-awd-bank-1-bank-2-1.jpg?v=1790696274","url":"https:\/\/performancechiptuning.com\/products\/catalytic-converter-for-lexus-is250-2006-2015-2-5l-awd-bank-1-bank-2","provider":"Performance Chip Tuning","version":"1.0","type":"link"}