{"product_id":"catalytic-converter-for-gmc-yukon-1996-2000-5-7l","title":"Catalytic Converter for GMC Yukon (1996-2000) 5.7L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Catalytic Converter Assembly for 1996-2000 GMC Yukon (GMT400)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The catalytic converter assembly replaces degraded or clogged factory emissions units on the 1996-2000 Yukon to restore proper exhaust velocity, eliminate catalyst efficiency trouble codes, and maintain legal emissions compliance.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMC Yukon Exhaust Degradation \u0026amp; Catalyst Failure\u003c\/h3\u003e\n\u003cp\u003eOriginal exhaust systems on the aging \u003cstrong\u003eGMT400\u003c\/strong\u003e platform suffer from severe thermal cycling and washcoat degradation. With high mileage, the factory catalytic brick on the \u003cstrong\u003eVortec 5700 L31\u003c\/strong\u003e engine often breaks down, fractures internally, or becomes fouled with unburnt hydrocarbons. This structural failure causes excessive backpressure, sluggish low-end torque, elevated exhaust temperatures, and recurring P0420 or P0430 diagnostic trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered to direct OE dimensional standards matching interchange references \u003cstrong\u003e645328\u003c\/strong\u003e, \u003cstrong\u003e50239\u003c\/strong\u003e, and \u003cstrong\u003e50410\u003c\/strong\u003e, this complete assembly restores factory exhaust flow dynamics. Built using a heavy-gauge stainless steel outer shell and a durable, flow-optimized ceramic substrate, it delivers proper noble metal surface area for efficient exhaust conversion. Pre-aligned flanges and dedicated factory-location oxygen sensor ports allow clean bolt-in installation without cutting or 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: 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;\"\u003e1996-2000 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;\"\u003eVortec 5700 L31 \/ GMT400\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;\"\u003e255 hp \/ 330 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;\"\u003e645328, 50239, 50410\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\u003e1996-2000 GMC Yukon 1500 (5.7L V8)\u003c\/li\u003e\n  \u003cli\u003eFits 2-Door and 4-Door Sport Utility Models\u003c\/li\u003e\n  \u003cli\u003eEPA 46-State Legal (Restricted: Not legal for sale or use in CA, NY, CO, or ME)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the GMT400 Yukon?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 1996-2000 GMC Yukon equipped with the Vortec 5700 L31 engine.\u003c\/p\u003e\n\n\u003ch4\u003eWill this resolve P0420 and P0430 check engine codes?\u003c\/h4\u003e\n\u003cp\u003eYes, it restores factory catalytic washcoat efficiency to clear converter-related DTCs, assuming proper upstream fuel control and sensor function.\u003c\/p\u003e\n\n\u003ch3\u003eThe GMC Towing \u0026amp; Durability Standard\u003c\/h3\u003e\n\u003cp\u003eDesigned to handle high exhaust thermal loads during demanding truck towing, highway hauling, and utility operation, this heavy-duty assembly preserves powertrain efficiency and long-term exhaust reliability.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67537761009912,"sku":"DS-ESGXVJAA4","price":215.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-gmc-yukon-1996-2000-5-7l-1.jpg?v=1790617112","url":"https:\/\/performancechiptuning.com\/es\/products\/catalytic-converter-for-gmc-yukon-1996-2000-5-7l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}