{"product_id":"catalytic-converter-for-cadillac-xt6-2020-2023-3-6l-front-left-right","title":"Catalytic Converter for Cadillac XT6 (2020-2023) 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 2020-2023 Cadillac XT6 (C1XX)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Front Left \u0026amp; Right Catalytic Converter assembly replaces deteriorated factory catalytic units on the 2020-2023 Cadillac XT6 to restore factory exhaust scavenging and eliminate catalyst inefficiency codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Cadillac XT6 Catalyst Substrate Breakdown\u003c\/h3\u003e\n\u003cp\u003eUnder repeated thermal cycling and prolonged engine run times, the factory close-coupled catalytic converters on the \u003cstrong\u003eC1XX\u003c\/strong\u003e platform suffer washcoat degradation and substrate sintering. The \u003cstrong\u003eLGX\u003c\/strong\u003e 3.6L V6 features integrated exhaust manifolds with direct cylinder head porting that subjects the OEM ceramic core to sustained thermal extremes up to 1,600°F. Over time, internal cell blockages restrict cross-bank exhaust pulses, elevating backpressure, triggering P0420\/P0430 DTCs, and degrading high-RPM volumetric efficiency.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis direct-replacement converter pair engineered for the \u003cstrong\u003eLGX\u003c\/strong\u003e engine platform utilizes a heavy-gauge 409 stainless steel tubular casing precision-bent to match factory packaging clearances. Inside, high-flow ceramic honeycomb substrates feature an optimized noble metal catalyst loading (Pt\/Pd\/Rh) to ensure thorough oxidation of unburned hydrocarbons and reduction of NOx. Laser-cut mounting flanges and integrated O2 sensor bungs eliminate the need for cutting or welding, providing bolt-on alignment to stock downpipe hangers and secondary exhaust pipe interfaces. Note: 46-state legal; not legal for sale or use in California, New York, Colorado, or Maine.\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: solid font-size: min-width:\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;\"\u003e2020-2023 Cadillac XT6\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\u003eLGX\u003c\/strong\u003e 3.6L V6 \/ \u003cstrong\u003eC1XX\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;\"\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;\"\u003e\n\u003cstrong\u003e641635\u003c\/strong\u003e, \u003cstrong\u003e641636\u003c\/strong\u003e\n\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\u003e2020 Cadillac XT6 Premium Luxury, Sport (3.6L V6 LGX)\u003c\/li\u003e\n  \u003cli\u003e2021 Cadillac XT6 Premium Luxury, Sport (3.6L V6 LGX)\u003c\/li\u003e\n  \u003cli\u003e2022 Cadillac XT6 Premium Luxury, Sport (3.6L V6 LGX)\u003c\/li\u003e\n  \u003cli\u003e2023 Cadillac XT6 Premium Luxury, Sport (3.6L V6 LGX)\u003c\/li\u003e\n  \u003cli\u003eFits Front Left (Driver) and Front Right (Passenger) positions only\u003c\/li\u003e\n  \u003cli\u003eExcludes 2.0L Turbo (LSY) and 2.5L configurations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the C1XX XT6?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2020-2023 Cadillac XT6 equipped with the \u003cstrong\u003eLGX\u003c\/strong\u003e 3.6L V6 engine.\u003c\/p\u003e\n\n\u003ch4\u003eWill installing these converters clear persistent P0420 and P0430 diagnostic trouble codes?\u003c\/h4\u003e\n\u003cp\u003eYes, replacing depleted OEM substrates with fresh high-efficiency washcoat cores restores downstream O2 sensor switching ratios to factory thresholds.\u003c\/p\u003e\n\n\u003ch3\u003eThe Cadillac Precision Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to preserve the low cabin NVH and precise emissions management expected of Cadillac luxury platforms, these direct-fit catalytic converters deliver OE-level fitment and reliable, trouble-free operation.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67538063425784,"sku":"DS-EJPGNAMUT","price":484.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-cadillac-xt6-2020-2023-3-6l-front-left-right-1.jpg?v=1790621769","url":"https:\/\/performancechiptuning.com\/products\/catalytic-converter-for-cadillac-xt6-2020-2023-3-6l-front-left-right","provider":"Performance Chip Tuning","version":"1.0","type":"link"}