Kooks Headers GREENCATS are ultra-high performance catalytic converters designed for use with naturally aspirated and forced induction engines up to 900 hp. These catted converters can reliably eliminate 90 percent of emissions-related "check engine light" warnings. Made from high-quality stainless steel in a choice of sizes with different converter attachment options, these GREENCAT catalytic converters by Kooks Headers can easily handle exhaust temps up to 1500 degrees F.
Note: Kooks Headers GREENCATS catalytic converters may not be legal for sale, installation, or use in some areas. Check your state and local laws.
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This product was added to our catalog on Friday 20 February, 2026.
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