Skip to product information
1 of 4

Catalytic Converter for Lincoln Navigator (2015-2017) 3.5L Left & Right



Regular price $373.95
Sale price $373.95 Regular price
Free Shipping within USA.

  • Guaranteed Fitment
  • Performance Tested
  • Lifetime Warranty

Want it soon? Order within

I18n Error: Missing interpolation value "end_date" for "Ends on {{ end_date }}"

Direct-Fit Left & Right Catalytic Converter Set for 2015-2017 Lincoln Navigator (U326)

What it Does: 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.

The Stock Lincoln Navigator Substrate Degradation

Under heavy towing duty, the twin-turbocharged 3.5L EcoBoost 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.

The Engineering Solution

Engineered 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.

Technical Specifications

Fitment 2015-2017 Lincoln Navigator
Engine / Chassis 3.5L EcoBoost V6 / U326
Stock Output 380 hp / 460 lb-ft
Replaces OEM Part # FL1Z-5E212-A, 19717, 19718, 59737, 59738, 645150, 645151

Compatibility

  • 2015 Lincoln Navigator 3.5L EcoBoost Turbo V6 (Standard & L Models)
  • 2016 Lincoln Navigator 3.5L EcoBoost Turbo V6 (Select, Reserve, & L Models)
  • 2017 Lincoln Navigator 3.5L EcoBoost Turbo V6 (Select, Reserve, & L Models)

Frequently Asked Questions

Does this fit the U326 Navigator?

Yes, this is a direct fit for the 2015-2017 Lincoln Navigator equipped with the 3.5L EcoBoost engine.

Will this converter set resolve downstream catalyst efficiency codes (P0420 / P0430)?

Yes, the fresh catalytic washcoat restores proper emissions reduction thresholds to clear check engine lights caused by degraded factory substrates.

The Lincoln Heavy-Duty Caliber

Full-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.




Fitment

Make

Lincoln

Engine Size

  • 3.5L

Year

  • 2015
  • 2016
  • 2017

Warranty

All products are backed by our Limited Lifetime Warranty. We stand by our quality. [See terms]

Catalytic Converter for Lincoln Navigator (2015-2017) 3.5L Left & Right

$373.95