Catalytic Converter for Lincoln MKS (2009-2010) 3.7L

Direct-Fit Catalytic Converter for 2009-2010 Lincoln MKS

What it Does: Restores factory exhaust velocity and eliminates P0420/P0430 catalyst efficiency DTCs on the rear/right cylinder bank of 3.7L models.

The Stock MKS Substrate Degradation

Factory ceramic converters on the D3-chassis Lincoln MKS endure extreme thermal cycling, which accelerates precious-metal washcoat sintering and substrate micro-fracturing. Over time, internal core degradation restricts exhaust gas scavenging, builds unneeded manifold backpressure, reduces fuel efficiency, and triggers persistent check engine lights due to depleted oxygen storage capacity.

The Engineering Solution

Engineered as a bolt-on replacement, this unit features a robust 409 stainless steel outer casing designed to resist road debris impact and thermal stress. Inside, a high-efficiency ceramic honeycomb monolith provides optimal surface area for rapid light-off and emissions reduction without throttling exhaust flow. Precision-machined, OE-spec flanges and integrated oxygen sensor bungs ensure leak-free seal integrity and proper downstream sensor positioning without cutting or welding.

Technical Specifications

Compatibility

• 2009 Lincoln MKS Base Sedan 3.7L V6 (Rear/Right Bank)
• 2010 Lincoln MKS Base Sedan 3.7L V6 (Rear/Right Bank)

The Lincoln Refinement Caliber

Maintains factory cabin quietness and smooth V6 power delivery by matching factory backpressure specifications, ensuring complete diagnostic compliance and CEL-free operation under all driving conditions.