How to Identify a Genuine Three-Way Catalytic Converter?
2 Answers
The pores in the internal porous ceramic should be uniformly arranged and consistent in size, with the ceramic being clean and relatively white. The porous ceramic in the three-way catalytic converter serves as a carrier, and its assembly with the outer shell should be sturdy and secure, with no signs of looseness. For a replacement three-way catalytic converter, the dimensions, the material of the internal porous ceramic, the arrangement pattern of the pores, and the number of rows should match the original factory specifications.
As an experienced auto mechanic, I highly recommend professional testing methods when inspecting the authenticity of a catalytic converter. The difference between genuine and fake catalytic converters is mainly reflected in emission tests: genuine ones contain precious metals like platinum and palladium, effectively reducing tailpipe emissions of carbon monoxide, hydrocarbons, and nitrogen oxides below national standards; whereas counterfeit ones use cheap materials, resulting in significantly excessive emissions. It's advisable to use an exhaust gas analyzer to measure vehicle emissions—normal readings indicate authenticity. Additionally, weight serves as a simple indicator—genuine catalytic converters are typically much heavier due to their high precious metal content, which can be easily checked with a regular scale. Post-installation performance differences may also arise, such as fake converters potentially triggering the check engine light or causing abnormal fuel consumption increases—these are also noteworthy to prevent environmental and safety hazards. Lastly, I emphasize that getting tested at authorized repair shops is the safest approach.
