Catalytic Converter for Ford Fusion (2013-2016) 2.0L

Direct-Fit Stainless Catalytic Converter for 2013-2016 Ford Fusion (CD4)

What it Does: This direct-fit catalytic converter bolts directly behind the turbocharger on the 2013-2016 Ford Fusion CD4 equipped with the 2.0L EcoBoost engine to convert HC, CO, and NOx emissions while restoring proper exhaust flow and catalyst efficiency.

The Stock Ford Fusion Catalyst Failure

Mounted directly behind the turbocharger, the factory converter on the CD4 platform with the 2.0L EcoBoost endures extreme exhaust gas temperatures and constant thermal cycling. Over time, heat soak and fuel-rich cold starts degrade the precious-metal washcoat or fracture the internal ceramic substrate. Once the substrate breaks apart or becomes thermally glazed, oxygen storage capacity drops, triggering P0420 efficiency faults, metallic rattling, and excessive exhaust backpressure under boost.

Common Symptoms of a Failing OEM Catalytic Converter

• Check Engine Light / Catalyst DTCs: Stored P0420 or P0430 codes indicating catalyst efficiency has fallen below the PCM threshold.
• Metallic Substrate Rattle: Audible rattling beneath the firewall when a fractured ceramic brick vibrates inside the housing.
• Excessive Backpressure & Power Loss: Sluggish turbo spool, elevated exhaust temperatures, and failed emissions testing from an obstructed core.

The Direct-Fit Stainless Exhaust Solution

Engineered as a bolt-on replacement (Part # 644127-2), this converter features a corrosion-resistant stainless steel body (8-inch length, 5-inch height) and heavy-duty piping to resist heat cracking. Its internal ceramic honeycomb substrate uses a high-grade precious-metal washcoat to maintain proper OBD-II oxygen sensor readings across both pre- and post-catalyst bungs. Equipped with a factory-style turbo flange, integrated heat shield, and braided flex joint to absorb engine torque movement, it installs without cutting or welding.

What's Included

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

Technical Specifications

Compatibility

• 2013, 2014, 2015, 2016 Ford Fusion SE (2.0L EcoBoost Turbo I4)
• 2013, 2014, 2015, 2016 Ford Fusion SE Luxury (2.0L EcoBoost Turbo I4)
• 2013, 2014, 2015, 2016 Ford Fusion Titanium (2.0L EcoBoost Turbo I4)
• Excludes 1.5L, 1.6L, and 2.5L engine models

Frequently Asked Questions & Fitment Warnings

Does this fit the CD4 Fusion?

Yes. This is a direct fit for the 2013-2016 Ford Fusion equipped with the 2.0L EcoBoost engine (SE, SE Luxury, and Titanium trims). Excludes 1.5L, 1.6L, and 2.5L engines. EPA Federal compliant only—not CARB approved and not legal for vehicles registered in California, New York, Colorado, or Maine.

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

Yes, when caused by a worn catalyst. A new converter resolves P0420/P0430 codes after verifying sensor health and exhaust sealing. Oxygen sensors are not included; transfer your existing sensors or install new units.

Are gaskets and mounting hardware included for installation?

Yes. Includes the ring seal, 2-bolt flange gasket, and two bolts with nuts and washers. Soak rusted fasteners with penetrating oil on a completely cool exhaust, torque evenly, and check every joint for leaks.

The Ford Precision Standard

Built to factory backpressure targets and OBD-II monitoring tolerances, this converter restores clean ECU fuel-trim feedback and reliable CEL-free operation on your CD4 Fusion. Compare flanges with your original part before installation; professional installation is recommended.