Catalytic Converter for Ford Fusion (2017-2020) 2.0L

Direct-Fit Stainless Catalytic Converter for 2017-2020 Ford Fusion (CD391)

What it Does: This direct-fit catalytic converter bolts behind the turbocharger on the 2017-2020 Ford Fusion (CD391) 2.0L EcoBoost I4 to restore emissions conversion and exhaust flow.

The Stock Ford Fusion Catalytic Failure

On the CD391 Fusion with the 2.0L EcoBoost I4, close-coupled turbocharger mounting subjects the OEM converter to severe thermal cycling and vibration. Over time, heat soak fractures the ceramic honeycomb substrate and degrades the precious-metal washcoat, reducing HC, CO, and NOx conversion. Once the core breaks apart, loose chunks rattle inside the shell, triggering P0420/P0430 catalyst efficiency codes and restricting exhaust flow.

Common Symptoms of a Failing OEM Catalytic Converter

• Check Engine Light / DTCs: Stored P0420/P0430 faults triggered by reduced post-catalyst oxygen storage.
• Substrate Rattle: Metallic rattling under load or idle from a fractured internal ceramic core.
• Excessive Backpressure: Sluggish turbo spool, reduced throttle response, and failed emissions inspections.

The Direct-Fit Stainless Catalytic Converter Solution

Engineered for the 2.0L EcoBoost I4, this direct-fit unit pairs a corrosion-resistant stainless steel body and piping with a braided flex joint to absorb engine movement. Inside the 8-inch by 5-inch housing, a ceramic honeycomb substrate with precious-metal washcoat restores conversion efficiency for OBD-II compliance. Factory turbo-side and rear 2-bolt flanges, hanger rods, and dual O2 sensor bungs ensure a leak-free, bolt-on install without cutting or welding.

What's Included

• 1 x Catalytic Converter
• 1 x Ring Seal
• 1 x 2-Bolt Flange Gasket
• 4 x Bolts with nuts and washers

Technical Specifications

Compatibility

• Make: Ford
• Model: Ford Fusion 2.0L EcoBoost (SE, SEL, Titanium, Platinum)
• Years: 2017, 2018, 2019, 2020
• Engine: 2.0L turbocharged I4 (EcoBoost)
• Exclusions: Not for 2013-2016 models, 1.5L, 2.5L, 2.7L, or Hybrid

Frequently Asked Questions & Fitment Warnings

Does this fit the CD391 Fusion?

Yes. This is a direct fit for the 2017-2020 Ford Fusion equipped with the 2.0L EcoBoost I4 engine. Excludes 2013-2016 models, 1.5L/2.5L/2.7L/Hybrid engines, and vehicles registered in CA, NY, CO, or ME (EPA Federal only, non-CARB).

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

Yes, if caused by catalyst wear. A new converter clears P0420/P0430 codes once exhaust leaks are ruled out; O2 sensors are not included and must be transferred or replaced.

Are gaskets and mounting hardware included for installation?

Yes. The ring seal, 2-bolt flange gasket, and four bolts with nuts and washers are included; soak fasteners in penetrating oil and torque evenly.

The Ford Precision Standard

Built to restore factory turbocharger flow and ECU readiness on your CD391 Fusion, this stainless converter ensures clean, CEL-free operation and dependable emissions compliance across federal states.