{"product_id":"catalytic-converter-for-infiniti-qx50-qx70-2014-2017-3-7l","title":"Catalytic Converter for Infiniti QX50 QX70 (2014-2017) 3.7L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Catalytic Converters for 2014-2017 Infiniti QX50,QX70 (J50 \/ S51)\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Replaces both factory catalytic converters on 2014-2017 Infiniti QX50 (\u003cstrong\u003eJ50\u003c\/strong\u003e) and QX70 (\u003cstrong\u003eS51\u003c\/strong\u003e) \u003cstrong\u003eVQ37VHR 3.7L V6\u003c\/strong\u003e models to restore exhaust flow and emissions compliance.\u003c\/p\u003e\u003ch3\u003eThe Stock Infiniti QX50,QX70 Catalytic Converter Failure\u003c\/h3\u003e\u003cp\u003eOver repeated thermal cycles on the \u003cstrong\u003eJ50\u003c\/strong\u003e and \u003cstrong\u003eS51\u003c\/strong\u003e chassis, OEM ceramic substrates behind the high-output \u003cstrong\u003eVQ37VHR 3.7L V6\u003c\/strong\u003e suffer severe heat soak and thermal shock. Unburned fuel from minor ignition misfires overheats the precious-metal washcoat, fracturing the brittle internal monolith. Dislodged fragments choke exhaust flow, spike backpressure, and trigger persistent \u003cstrong\u003eP0420\u003c\/strong\u003e and \u003cstrong\u003eP0430\u003c\/strong\u003e catalyst-efficiency codes.\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:\u003c\/strong\u003e Triggers \u003cstrong\u003eP0420\u003c\/strong\u003e or \u003cstrong\u003eP0430\u003c\/strong\u003e codes from degraded HC, CO, and NOx conversion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubstrate Rattle:\u003c\/strong\u003e Metallic rattling under load from fractured ceramic honeycomb inside the shell.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Loss:\u003c\/strong\u003e High backpressure chokes upper-RPM breathing and fails emissions tests.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Direct-Fit Stainless Catalytic Converter Solution\u003c\/h3\u003e\u003cp\u003eThis 2-piece assembly (\u003cstrong\u003e16478\u003c\/strong\u003e, \u003cstrong\u003e16479\u003c\/strong\u003e, \u003cstrong\u003eINFT001002\u003c\/strong\u003e) replaces both banks using stainless steel bodies and piping that resist rust and heat cracking. Each converter pipe integrates two ceramic honeycomb catalyst stages with a precious-metal washcoat, a post-catalyst O2 sensor port, and factory flanges (8-inch body length, 5-inch height) for leak-free, bolt-on installation without cutting or welding.\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2 x Catalytic Converter Pipes (Pair)\u003c\/li\u003e\n\u003cli\u003e2 x Ring Gaskets\u003c\/li\u003e\n\u003cli\u003e2 x 2-Bolt Flange Gaskets\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;\"\u003e2014-2017 Infiniti QX50,QX70\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;\"\u003eVQ37VHR 3.7L V6 \/ J50, S51\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\u003ctr style=\"background-color: #f9f9f9;\"\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;\"\u003e16478, 16479, INFT001002\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2014-2017 Infiniti QX50 (Base, Journey) — 3.7L V6\u003c\/li\u003e\n\u003cli\u003e2014-2017 Infiniti QX70 (Base, Sport, Seduction) — 3.7L V6\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\u003ch4\u003eDoes this fit the J50 \/ S51 QX50,QX70?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e Fits 2014-2017 QX50,QX70 \u003cstrong\u003eVQ37VHR 3.7L V6\u003c\/strong\u003e models. \u003cstrong\u003eExcludes 5.0L V8; EPA federal only (not legal in CA, NY, CO, ME).\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 worn converters caused the fault; O2 sensors are excluded.\u003c\/strong\u003e Transfer existing sensors and verify zero exhaust leaks.\u003c\/p\u003e\u003ch4\u003eAre gaskets included for installation?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e Ring and flange gaskets are included; soak old studs with penetrating oil and torque evenly.\u003c\/p\u003e\u003ch3\u003eThe Infiniti Precision Standard\u003c\/h3\u003e\u003cp\u003eTuned for \u003cstrong\u003eVQ37VHR 3.7L V6\u003c\/strong\u003e scavenging, this converter pair restores throttle response and rattle-free emissions compliance.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68083816562936,"sku":"DS-EDLVL8PQ7","price":316.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-infiniti-qx50-qx70-2014-2017-3-7l-1.jpg?v=1794533692","url":"https:\/\/performancechiptuning.com\/products\/catalytic-converter-for-infiniti-qx50-qx70-2014-2017-3-7l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}