Bosal 079-5243 Catalytic Converter, 1 Pack, (N): Automotive. Buy Bosal 079-5243 Catalytic Converter, 1 Pack, (N): Catalytic Converters - ✓ FREE DELIVERY possible on eligible purchases. Direct fit . NOT legal for installation in CA or on ny and smoke vehicles with California emissions . Higher Loadings of Precious metals designed to keep MIL off . Catalytic converter, not CARB approved, designed with higher loadings of precious metals to satisfy vehicle emission requirements and keep check engine light off. . . .