{"product_id":"catalytic-converter-for-chevrolet-tahoe-2015-2018-5-3l","title":"Catalytic Converter for Chevrolet Tahoe (2015-2018) 5.3L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Stainless Catalytic Converter Pair for 2015-2018 Chevrolet Tahoe (K2XX)\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e This direct-fit catalytic converter pair replaces both factory exhaust bank assemblies on the 2015-2018 Chevrolet Tahoe (\u003cstrong\u003eK2XX\u003c\/strong\u003e) equipped with the \u003cstrong\u003eL83 5.3L V8\u003c\/strong\u003e to restore exhaust flow and emissions conversion.\u003c\/p\u003e\u003ch3\u003eThe Stock Chevrolet Tahoe Catalytic Converter Failure\u003c\/h3\u003e\u003cp\u003eOn the \u003cstrong\u003eK2XX\u003c\/strong\u003e chassis equipped with the \u003cstrong\u003eL83 5.3L V8\u003c\/strong\u003e, factory catalytic converters endure severe thermal cycling from Active Fuel Management cylinder deactivation and heavy towing loads. Over time, repeated heat soak degrades the precious-metal washcoat and causes the internal ceramic monolith to fracture or melt. When substrate efficiency drops below ECM thresholds, it triggers \u003cstrong\u003eP0420\/P0430\u003c\/strong\u003e fault codes, while broken honeycomb chunks create metallic rattles and severe exhaust backpressure.\u003c\/p\u003e\u003ch4\u003eCommon Symptoms of a Failing OEM Catalytic Converter\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck Engine Light \/ Catalyst DTCs:\u003c\/strong\u003e Persistent \u003cstrong\u003eP0420\u003c\/strong\u003e (Bank 1) or \u003cstrong\u003eP0430\u003c\/strong\u003e (Bank 2) codes when downstream O2 sensors detect insufficient oxygen storage capacity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetallic Exhaust Rattle:\u003c\/strong\u003e Audible rattling under the floorboards at idle or deceleration caused by a fractured ceramic substrate bouncing inside the shell.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRestricted Exhaust Flow \u0026amp; Power Loss:\u003c\/strong\u003e Sluggish throttle response, elevated exhaust gas temperatures, and failed emissions testing due to clogged honeycomb channels.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Direct-Fit Stainless Catalytic Converter Solution\u003c\/h3\u003e\u003cp\u003eThis complete left Y-pipe and right-side converter assembly is engineered with corrosion-resistant \u003cstrong\u003estainless steel\u003c\/strong\u003e tubing and an \u003cstrong\u003e8-inch by 5-inch\u003c\/strong\u003e converter body to prevent heat cracking. Inside, a high-flow \u003cstrong\u003eceramic honeycomb\u003c\/strong\u003e substrate coated with precious-metal catalysts restores proper HC, CO, and NOx reduction. Precision mandrel bends, factory-style manifold flanges, and integrated \u003cstrong\u003eO2 sensor ports\u003c\/strong\u003e on both pipes ensure a leak-free, bolt-on installation without cutting or welding.\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1 x Left Y-Pipe Catalytic Converter Assembly\u003c\/li\u003e\n\u003cli\u003e1 x Right Catalytic Converter Pipe\u003c\/li\u003e\n\u003cli\u003e1 x U-Clamp\u003c\/li\u003e\n\u003cli\u003e6 x Bolts with nuts and washers\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\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;\"\u003e2015-2018 Chevrolet Tahoe\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;\"\u003eL83 5.3L V8 \/ K2XX\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;\"\u003eEmissions \u0026amp; Substrate\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eEPA Federal (46-State Legal) \/ Ceramic Honeycomb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eInstallation Type\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eDirect Bolt-On OEM Replacement (No Cutting or Welding)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2015-2018 Chevrolet Tahoe LS (5.3L V8)\u003c\/li\u003e\n\u003cli\u003e2015-2018 Chevrolet Tahoe LT (5.3L V8)\u003c\/li\u003e\n\u003cli\u003e2015-2018 Chevrolet Tahoe LTZ (5.3L V8)\u003c\/li\u003e\n\u003cli\u003e2015-2018 Chevrolet Tahoe Premier (5.3L V8)\u003c\/li\u003e\n\u003cli\u003e2015-2018 Chevrolet Tahoe Z71 (5.3L V8)\u003c\/li\u003e\n\u003cli\u003e2015-2018 Chevrolet Tahoe Police \/ PPV \/ SSV (5.3L V8)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\u003ch4\u003eDoes this fit the K2XX Tahoe?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e This is a direct fit for the 2015-2018 Chevrolet Tahoe equipped with the \u003cstrong\u003eL83 5.3L V8\u003c\/strong\u003e engine. \u003cstrong\u003eDoes not fit 6.2L V8 models, 2019 and newer models, or vehicles registered in California, New York, Colorado, or Maine (EPA Federal compliant, not CARB approved).\u003c\/strong\u003e\u003c\/p\u003e\u003ch4\u003eWill this clear P0420\/P0430 codes, and are O2 sensors included?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes, if caused by a degraded catalyst—and no, O2 sensors are not included.\u003c\/strong\u003e Replacing both banks restores catalyst efficiency to clear \u003cstrong\u003eP0420\/P0430\u003c\/strong\u003e codes, provided you transfer or replace faulty oxygen sensors and seal any exhaust leaks.\u003c\/p\u003e\u003ch4\u003eWhat mounting hardware is included for installation?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eA U-clamp and six bolts with nuts and washers are included.\u003c\/strong\u003e Let the exhaust cool fully, soak seized manifold fasteners with penetrating oil, install with new gaskets, torque hardware evenly, and inspect every joint for leaks upon startup.\u003c\/p\u003e\u003ch3\u003eThe Chevrolet Heavy-Duty Standard\u003c\/h3\u003e\u003cp\u003eBuilt to withstand high exhaust gas temperatures from daily hauling and highway towing, this stainless steel assembly keeps your \u003cstrong\u003eL83 5.3L V8\u003c\/strong\u003e running clean and restriction-free. Restore factory backpressure and reliable emissions compliance across both exhaust banks without custom fabrication.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68085542027512,"sku":"DS-ETIU5DJWO","price":256.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-chevrolet-tahoe-2015-2018-5-3l-1.jpg?v=1794546741","url":"https:\/\/performancechiptuning.com\/fr\/products\/catalytic-converter-for-chevrolet-tahoe-2015-2018-5-3l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}