MagnaFlow's California OBDII Catalytic Converters are the first series of a new line of converters designed for use on vehicles equipped with Second Generation On-Board Diagnostic (OBDII) systems. They are designed, tested, and catalogued for specific vehicles. They are not traditional universal converters. These converters have higher efficiency than conventional strict California requirements for conversion efficiency and durability. These converters are warranted for 5 years or 50,000 miles, whichever comes first, on the converter body and internal catalyst, including replacement for OBDII diagnostic codes for low catalyst efficiency.