Can Aftermarket Catalytic Converters Be Used?

[Evangeline]

It is best not to use aftermarket catalytic converters. The catalytic converter is the most important external purification device installed in the vehicle's exhaust system, converting harmful gases such as CO, HC, and NOx in the exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions. The drawbacks of aftermarket catalytic converters include: 1. Poor performance: Aftermarket catalytic converters may not perform as well as the original equipment, leading to non-compliant exhaust emissions; 2. Lack of certification: Unlike OEM catalytic converters produced by vehicle manufacturers, aftermarket ones may not have relevant certification or quality assurance; 3. Shorter lifespan: The quality of aftermarket catalytic converters varies, and their service life may be shorter.