High Quality Direct Fit Rear Catalytic Converter for 2009-2012 Nissan Sentra 2.0L

Replacing a Converter Using Flanges

1. Secure your vehicle up on jack stands. Use a pair of safety goggles when working under the car.

2. Spray the bolts holding the converter to the flanges with WD-40 or other penetrating fluid to help loosen the bolts.

3. Slightly loosen all the bolts. Then, support the converter with a block of wood or other object and remove the bolts completely. The converter should now come out of the exhaust system.

4. Use a wire brush to remove any gasket material or debris around the flanges.

5. Test fit the new converter and partially install the bolts onto the flanges. If the unit comes with gaskets for the flanges, use them. Ensure that you’ve placed the converter in the correct direction. The inlet side should connect from the engine, and the outlet should connect to the muffler. There is often an arrow on the catalytic converter to indicate the flow of gasses.

6. With everything lined up, tighten the bolts completely.

7. If the converter had any brackets or supports that hold the unit in place, reconnect those brackets.

Catalytic converter is a device used to reduce the toxicity of emissions from an internal combustion engine.By cleaning up the pollutants left over from combustion through chemical Oxidation and Reduction reactions, the catalytic converters convert the tailpipe emissions of hydrocarbons (HC) and carbon monoxide (CO) into nitrogen (N2), carbon dioxide (CO2) and water (H2O), and elevate the harmful emissions to extremely low levels.