Walker 55603 Ultra Catalytic Converter (EPA Compliant) (Non-CARB Compliant) This item is not for sale in California/Non CARB compliant Designed for use on OBDII 1996 and newer vehicles Flange to flange, direct fit design bolts to existing exhaust. Meets EPA emissions requirements. Stainless steel body and aluminized body and pipe heat shields for durability. Thick OE-style flanges, hangers and brackets for enhanced strength.