{"product_id":"catalytic-converter-for-gmc-acadia-2017-2023-3-6l-front-left-right","title":"Catalytic Converter for GMC Acadia (2017-2023) 3.6L Front Left \u0026 Right","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Front Left \u0026amp; Right Catalytic Converter Set for 2017-2023 GMC Acadia (C1XX)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Front Left \u0026amp; Right Catalytic Converter Set replaces worn factory manifold-converters on the 2017-2023 GMC Acadia to resolve catalyst efficiency DTCs and restore unrestricted exhaust flow.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMC Acadia Catalyst Thermal Fatigue and Flow Restriction\u003c\/h3\u003e\n\u003cp\u003eOn the second-generation \u003cstrong\u003eC1XX\u003c\/strong\u003e Acadia, the naturally aspirated direct-injected \u003cstrong\u003eLGX\u003c\/strong\u003e 3.6L V6 operates under elevated exhaust gas temperatures (EGTs) and stringent fuel-trim management. Over extended duty cycles, factory ceramic matrices suffer from washcoat thermal sintering, carbon fouling, and substrate degradation. This breakdown triggers persistent P0420 and P0430 diagnostic trouble codes, elevates exhaust backpressure against the cylinder heads, and leads to reduced fuel economy and sluggish mid-range throttle response.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered as a bolt-on assembly matching OEM references \u003cstrong\u003e641635\u003c\/strong\u003e and \u003cstrong\u003e641636\u003c\/strong\u003e, this left and right bank catalytic converter pair restores exhaust velocity and emissions compliance. Built with heavy-gauge 409 stainless steel outer shells and robotic TIG-welded, precision-machined flanges, it withstands severe thermal expansion cycles without cracking. High-flow ceramic honeycomb substrates feature an optimized precious-metal washcoat to maximize gas-surface contact area, ensuring efficient conversion of hydrocarbons, carbon monoxide, and NOx without restricting high-RPM exhaust scavenging.\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;\"\u003e2017-2023 GMC Acadia\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;\"\u003e3.6L LGX V6 \/ C1XX\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;\"\u003e310 hp \/ 271 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;\"\u003e641635, 641636\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\u003e2017-2023 GMC Acadia SLE 3.6L V6 (LGX)\u003c\/li\u003e\n  \u003cli\u003e2017-2023 GMC Acadia SLT 3.6L V6 (LGX)\u003c\/li\u003e\n  \u003cli\u003e2020-2023 GMC Acadia AT4 3.6L V6 (LGX)\u003c\/li\u003e\n  \u003cli\u003e2017-2023 GMC Acadia Denali 3.6L V6 (LGX)\u003c\/li\u003e\n  \u003cli\u003eFits Front Left (Radiator Side) and Front Right (Firewall Side) on 3.6L V6 models only; does not fit 2.0L Turbo or 2.5L I4 engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the C1XX Acadia?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2017-2023 GMC Acadia equipped with the 3.6L LGX engine.\u003c\/p\u003e\n\n\u003ch4\u003eWill this converter set clear P0420 and P0430 check engine lights?\u003c\/h4\u003e\n\u003cp\u003eYes, the internal high-density catalytic washcoat restores the required conversion efficiency threshold, resolving catalyst system below-efficiency trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe GMC Professional Grade Standard\u003c\/h3\u003e\n\u003cp\u003eFor mid-size crossover platforms tasked with family hauling and class-leading 4,000-lb towing duty, maintaining correct exhaust gas evacuation is critical to powertrain longevity. This dual-bank catalytic assembly preserves engine thermal management and structural exhaust integrity under heavy highway loads.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67538061394168,"sku":"DS-E681PW23E","price":484.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-gmc-acadia-2017-2023-3-6l-front-left-right-1.jpg?v=1790621671","url":"https:\/\/performancechiptuning.com\/fr\/products\/catalytic-converter-for-gmc-acadia-2017-2023-3-6l-front-left-right","provider":"Performance Chip Tuning","version":"1.0","type":"link"}