Specification: Model: I78923 Product Name: Catalytic Converter Body Material: 409 Stainless Steel Substrate material: Ceramic Cell Count: 400 Cell Inlet/Outlet Diameter: 2.5inch/6.35cm inside diameter Body Size: 4inch /10.16cm Round Overall Length: 11inch / 27.94cm Engine Limit: 2.5L O2 Sensor Port: No Note:off-road use only Features: - 100% Brand new never used or installed - It is resistant to thermal shock and cracking,long service life. - It is high corrosion and wear resistance. - Main function is to convert toxic gases, Contaminants to harmless gases,helps to purify treat car exhaust. - By using it,it can help to improve exhaust gas flowly, save horsepower and torque. - Great emissions control,high efficient and work efficiently. Package Included: 1x 2.5" Uni.