Converters Unlimited HE206910 Exhaust Manifold with Catalytic Converter (Non-CARB Compliant) The Premium Catalytic Converter from Converters Unlimited is designed and engineered with innovative technology Washcoat to provide premium performance, durability and comply with CARB (California Air Resources Board) emissions requirements. We manufacture high standard, high quality catalytic converters with a 5-year or 50,000 mile warranty, supplied by one of the best sources of raw material in the industry. Because were California-based, we dont have to ship half a continent or more away to supply Non-CARB certified catalytic converters where its actually required by law and therefore absolutely needed.