The product is a 2.5" inlet/outlet universal catalytic converter that is EPA OBDII approved for welding on. It features a silver color with a stainless steel body and ceramic substrate material. The catalytic converter has a cell count of 400 cells and is designed for engines up to 3.0 liters. It includes an OBD II sensor and comes with a manufacturer warranty of 5 years. The compact design allows for easy replacement and it is equipped with a heat shield for added protection. This catalytic converter is suitable for vehicles in restricted states such as California, New York, Colorado, and Maine, offering a universal fitment for various car models.