Catalytic Converter for Lincoln Continental (2017-2020) 2.7L 3.0L

Direct-Fit Catalytic Converter Pair for 2017-2020 Lincoln Continental (CD4 / D544)

What it Does: This left and right catalytic converter pair fits the 2017-2020 Lincoln Continental (CD4 / D544) equipped with the 2.7L / 3.0L EcoBoost V6, bolting directly to the turbocharger outlets to restore emissions conversion and clear catalyst efficiency codes.

The Stock Lincoln Continental Catalyst Failure

On the CD4 / D544 Continental, the twin-turbo 2.7L / 3.0L EcoBoost V6 exposes close-coupled converters to extreme exhaust heat directly off the turbine outlets. Repeated thermal cycling, heat soak, and unburned fuel from minor misfires sinter the washcoat and fracture the factory ceramic core. As the substrate crumbles or clogs, oxygen storage drops and backpressure rises, triggering P0420 and P0430 catalyst efficiency faults across both banks.

Common Symptoms of a Failing OEM Catalytic Converter

• Check Engine Light / DTCs: Stored P0420 or P0430 codes triggered by degraded downstream oxygen storage capacity.
• Substrate Rattle: Metallic rattling under idle or deceleration from a fractured ceramic core vibrating inside the housing.
• Excessive Backpressure: Sluggish turbocharger spool and failed federal emissions inspections caused by restricted honeycomb passages.

The Direct-Fit Stainless Catalytic Converter Solution

Built as a complete left and right pair, these units feature corrosion-resistant stainless steel bodies (8-inch x 5-inch) and mandrel-formed piping to prevent thermal cracking. Inside, a high-flow ceramic honeycomb substrate with a precious-metal washcoat restores HC, CO, and NOx conversion for proper OBD-II readiness. Factory turbo flanges, support brackets, and pre- and post-catalyst O2 sensor bungs provide a bolt-on fit without cutting or welding.

What's Included

• 2 x Catalytic Converters (Left and Right Bank, Part # 16589)
• 2 x Flange Gaskets
• Mounting Bolts, Nuts, and Washers

Technical Specifications

Compatibility

• Years: 2017, 2018, 2019, 2020 Lincoln Continental
• Trims: Select, Reserve, Black Label, Coach Door
• Engines: 2.7L Twin-Turbo V6, 3.0L Twin-Turbo V6

Frequently Asked Questions & Fitment Warnings

Does this fit the CD4 / D544 Continental?

Yes. Direct fit for 2017-2020 Lincoln Continental 2.7L / 3.0L EcoBoost V6 models (Select, Reserve, Black Label, Coach Door). Excludes 3.7L models. EPA federal compliant only—not CARB approved or legal for vehicles registered in CA, NY, CO, or ME.

Will this clear P0420/P0430 codes, and are O2 sensors included?

Yes, for worn converters. Restores catalyst efficiency to clear P0420/P0430 codes when upstream sensors and fuel trims are healthy. O2 sensors are not included; transfer existing sensors or install new units.

Are gaskets and mounting hardware included for installation?

Yes. Includes two flange gaskets plus bolts, nuts, and washers. Allow exhaust to cool fully, soak seized turbo studs with penetrating oil, and torque all fasteners evenly.

The Lincoln Precision Standard

Twin-turbocharged luxury platforms require exact flange geometry and tight emissions tolerances to keep ECU readiness monitors clear. This direct-fit stainless assembly eliminates rattles and restores reliable, code-free operation.