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49 State Certified

The Tier One Components catalytic converters have been approved and certified by the Environmental Protection Agency for sale and installation in vehicles located in 49 States in the United States. California is the only State where these converters are not certified. Therefore, Tier One Components cannot sell converters to any resident or business in California, if those converters might be installed on vehicles that would operate within the State of California.

If you have questions about our 49 state certification please contact us today.