{"product_id":"catalytic-converter-for-lincoln-navigator-2015-2017-3-5l-left-right","title":"Catalytic Converter for Lincoln Navigator (2015-2017) 3.5L Left \u0026 Right","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Left \u0026amp; Right Catalytic Converter Set for 2015-2017 Lincoln Navigator (U326)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Direct-Fit Catalytic Converter Set replaces worn factory converters on the 2015-2017 Navigator to eliminate P0420\/P0430 diagnostic trouble codes, stabilize turbine backpressure, and restore proper exhaust scavenging.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Lincoln Navigator Substrate Degradation\u003c\/h3\u003e\n\u003cp\u003eUnder heavy towing duty, the twin-turbocharged \u003cstrong\u003e3.5L EcoBoost\u003c\/strong\u003e platform subjects the OEM catalytic converters to extreme thermal cycling and high exhaust gas velocities. Over time, heat soak and oil vapor contamination degrade the factory ceramic washcoat, leading to substrate fracturing, soot clogging, or core meltdown. This restriction spikes exhaust backpressure before the turbochargers, elevating cylinder head temperatures and triggering persistent catalyst efficiency fault codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered as a direct OE bolt-on replacement, this left-and-right assembly features thick-gauge stainless steel tubing and heavy-duty converter bodies built to resist corrosive condensates and thermal fatigue. Inside, a durable ceramic honeycomb substrate delivers high cell density paired with an optimized precious metal washcoat to effectively oxidize hydrocarbons and carbon monoxide while reducing NOx emissions. CNC-machined mounting flanges and integrated factory-located oxygen sensor bungs mate directly to OEM downpipes and cat-back piping, ensuring leak-free sealing under high exhaust pulses.\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;\"\u003e2015-2017 Lincoln Navigator\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;\"\u003e3.5L EcoBoost V6 \/ \u003cstrong\u003eU326\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;\"\u003e380 hp \/ 460 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\u003eFL1Z-5E212-A\u003c\/strong\u003e, 19717, 19718, 59737, 59738, 645150, 645151\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\u003e2015 Lincoln Navigator 3.5L EcoBoost Turbo V6 (Standard \u0026amp; L Models)\u003c\/li\u003e\n  \u003cli\u003e2016 Lincoln Navigator 3.5L EcoBoost Turbo V6 (Select, Reserve, \u0026amp; L Models)\u003c\/li\u003e\n  \u003cli\u003e2017 Lincoln Navigator 3.5L EcoBoost Turbo V6 (Select, Reserve, \u0026amp; L Models)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the U326 Navigator?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2015-2017 Lincoln Navigator equipped with the \u003cstrong\u003e3.5L EcoBoost\u003c\/strong\u003e engine.\u003c\/p\u003e\n\n\u003ch4\u003eWill this converter set resolve downstream catalyst efficiency codes (P0420 \/ P0430)?\u003c\/h4\u003e\n\u003cp\u003eYes, the fresh catalytic washcoat restores proper emissions reduction thresholds to clear check engine lights caused by degraded factory substrates.\u003c\/p\u003e\n\n\u003ch3\u003eThe Lincoln Heavy-Duty Caliber\u003c\/h3\u003e\n\u003cp\u003eFull-size platforms demand uncompromised reliability under high load and continuous towing; this heavy-gauge stainless converter assembly maintains structural integrity against extreme exhaust gas temperatures and chassis flex.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67538060247288,"sku":"DS-EIHUDUDZ0","price":373.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-lincoln-navigator-2015-2017-3-5l-left-right-1.jpg?v=1790621632","url":"https:\/\/performancechiptuning.com\/products\/catalytic-converter-for-lincoln-navigator-2015-2017-3-5l-left-right","provider":"Performance Chip Tuning","version":"1.0","type":"link"}