OEM Nissan Catalytic Converters

Reduce Emissions with Catalytic Converters

The Nissan Canada parts team has all the parts you're looking for your restoration, modification, or repair project. Catalytic converters use precious metals to reduce harmful exhaust emissions. These devices include ceramic or metallic substrates coated with catalytic materials. Factory converters meet emission standards while maintaining engine performance. Proper operation reduces carbon monoxide, hydrocarbons, and nitrogen oxides.

How Catalytic Converters Clean Exhaust

Your catalytic converter uses platinum, palladium, and rhodium to trigger chemical reactions. The substrate provides surface area for catalytic reactions. Oxygen sensors monitor exhaust composition and adjust fuel delivery. Heat from exhaust activates the catalytic process. Reduction catalysts convert nitrogen oxides to nitrogen and oxygen. Oxidation catalysts turn carbon monoxide and hydrocarbons into carbon dioxide and water. Nissan catalytic converters for vehicles like the Altima and Frontier include specific cell densities for efficient conversion. The converter requires operating temperature above 400 degrees. Ceramic substrates resist thermal shock. Metal housings protect internal components. The system integrates with exhaust components for complete emissions control.

What Causes Converter Failure

Catalytic converters clog from oil consumption or coolant leaks contaminating the substrate. Impact damage from road debris crushes internal structures. Overheating from misfires melts the substrate. Substrate material breaks apart from thermal cycling. Generic aftermarket converters often lack adequate precious metal loading. Phosphorus from oil additives poisons catalytic surfaces. Rich fuel mixture creates excessive heat. Coolant contamination clogs cells. External rust attacks housings. Sensor failures prevent proper air-fuel control. Physical damage to the housing allows substrate to escape.

Testing Converter Operation

Replace catalytic converters when exhaust backpressure exceeds specifications. Check engine lights for catalyst efficiency codes indicate problems. Most converters last 80,000 to 120,000 miles. Listen for rattling sounds indicating loose substrate material. Test exhaust temperature—converters should be hot during operation. Failed converters reduce engine power. Sulfur smell indicates rich running damaging the converter. Visual inspection shows external damage or rust. Backpressure testing measures restriction. Genuine Nissan catalytic converters include correct precious metal formulations and substrate designs that meet emissions standards while maintaining performance, unlike aftermarket converters that may not reduce emissions adequately or restrict exhaust flow causing power loss.

With Nissan Canada's extensive inventory, your vehicle will thank you for the genuine care.