TWG direct-fit high flow catalytic converter is designed to meet or even exceed OE quality and performance standards without sacrificing flow rate. Features heavy-duty stainless steel outer shell construction for maximum durability. The internal substrates and precious metal loading have been carefully engineered for maximum efficiency and to avoid MIL (Malfunction Indicator Lamp) code issues that are common with lower quality converters. The standard OE specification hanger and flanges are designed for easy installation, direct bolts to existing exhaust system without doing extra modification (comes with gasket and hardware).