What are the differences between OEM and aftermarket catalytic converters?
2 Answers
The differences between OEM and aftermarket catalytic converters are as follows: 1. Conversion efficiency: Generally, OEM catalytic converters are effective in purifying exhaust emissions, while most aftermarket ones are ineffective. Since vehicles require annual inspections, it is necessary to use qualified catalytic converters. 2. Manufacturers: OEM catalytic converters are produced by the manufacturer's designated suppliers and come with relevant certifications, gaining recognition from the automaker. Aftermarket catalytic converter manufacturers can be categorized into small workshops, secondary factories, and high-quality replicas. Products from small workshops are basically unusable; those from secondary factories can be used on most vehicles; and high-quality replicas differ from OEM ones only in terms of automaker approval.
I've driven several cars and tried both OEM and aftermarket catalytic converters when replacing them. OEM parts are produced directly by the car brand, offering reliable quality and perfect compatibility with the vehicle's system. They can last three to five years without issues and ensure exhaust emissions meet standards. Aftermarket ones are much cheaper, but they often come from miscellaneous brands with inferior materials. They might develop problems like foul exhaust odors or emission failures within a year or two, affecting annual inspections and requiring repeated trips to the repair shop. After calculating the total cost of multiple repairs, they may end up being less hassle-free than OEM parts. For average car owners, OEM parts, though pricier, are worth the money. Aftermarket options are only suitable for those with extremely tight budgets, and even then, it's crucial to find reputable brands to avoid pitfalls.
