{"product_id":"catalytic-converter-for-gmc-yukon-2000-2006-4-8l-5-3l-front","title":"Catalytic Converter for GMC Yukon (2000-2006) 4.8L 5.3L Front","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Front Catalytic Converter Set for 2000-2006 GMC Yukon (GMT800)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The front catalytic converter set replaces deteriorated factory emissions equipment on the 2000-2006 GMC Yukon to restore factory exhaust scavenging and eliminate catalyst inefficiency diagnostic trouble codes like P0420 and P0430.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMC Yukon Exhaust Flow Restriction\u003c\/h3\u003e\n\u003cp\u003eFactory catalytic converters on the \u003cstrong\u003eGMT800\u003c\/strong\u003e platform deteriorate after years of thermal cycling, fuel trim shifts, and engine oil vapor pass-through. The original ceramic substrate breaks down, leading to substrate crumbling, internal blockages, and severe exhaust backpressure. This restriction chokes the \u003cstrong\u003eVortec 4800 (LR4)\u003c\/strong\u003e and \u003cstrong\u003eVortec 5300 (LM7\/L59)\u003c\/strong\u003e engines, elevating exhaust gas temperatures, causing sluggish acceleration, lowering towing fuel economy, and triggering recurring check engine lights.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis direct-replacement front assembly features high-grade stainless steel tubing engineered to resist corrosion and structural fatigue under high duty-cycle towing. Inside, a durable washcoat-loaded ceramic honeycomb substrate maximizes surface area for efficient hydrocarbon, carbon monoxide, and NOx reduction without restricting exhaust velocity. Precision-machined, heavy-gauge mating flanges and pre-welded O2 sensor bungs eliminate exhaust leaks and allow straightforward installation using stock hanger locations without custom fabrication.\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;\"\u003e2000-2006 GMC Yukon\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;\"\u003e4.8L LR4, 5.3L LM7\/L59 Vortec \/ GMT800\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;\"\u003e275-295 hp \/ 290-335 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;\"\u003e9063, 20370, 51097, 2010019, 50511, 19010, 9083, 50366, 93419, 079-5150\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\u003e2000-2006 GMC Yukon SLE 4.8L V8 (LR4)\u003c\/li\u003e\n  \u003cli\u003e2000-2006 GMC Yukon SLT 4.8L V8 (LR4)\u003c\/li\u003e\n  \u003cli\u003e2000-2006 GMC Yukon SLE 5.3L V8 (LM7 \/ L59)\u003c\/li\u003e\n  \u003cli\u003e2000-2006 GMC Yukon SLT 5.3L V8 (LM7 \/ L59)\u003c\/li\u003e\n  \u003cli\u003eFits Front position; not compatible with 6.0L V8 models\u003c\/li\u003e\n  \u003cli\u003eEPA compliant (48-State legal; restricted in CA, NY, CO, ME)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the GMT800 Yukon?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2000-2006 GMC Yukon equipped with the 4.8L LR4 or 5.3L LM7\/L59 engine.\u003c\/p\u003e\n\n\u003ch4\u003eWill this direct-fit catalytic converter clear my P0420 and P0430 DTC codes?\u003c\/h4\u003e\n\u003cp\u003eYes, it restores factory catalytic efficiency to clear catalyst-related trouble codes provided upstream air-fuel ratios and oxygen sensors function correctly.\u003c\/p\u003e\n\n\u003ch3\u003eThe GMC Heavy-Duty Towing Caliber\u003c\/h3\u003e\n\u003cp\u003eBuilt specifically for rugged full-size SUV duty cycles, this converter assembly withstands continuous thermal loads during heavy payload hauling and trailer towing, ensuring stable backpressure and reliable emissions compliance.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67538075091192,"sku":"DS-ECFN3JYYB","price":202.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-gmc-yukon-2000-2006-4-8l-5-3l-front-1.jpg?v=1790622142","url":"https:\/\/performancechiptuning.com\/fr\/products\/catalytic-converter-for-gmc-yukon-2000-2006-4-8l-5-3l-front","provider":"Performance Chip Tuning","version":"1.0","type":"link"}