The Injen Intercooler Pipe Upgrade Kit is exactly what your vehicle is craving. Larger diameters, better mandrel bends, and a performance design make for more horsepower, more torque, better flow, faster spool-up, less turbo lag, and a happy driver! Piping Diameters 2.5" Hot Side 2.75" Cold Side. This kit comes with easy to follow installation instructions. Installation can typically be completed in one hour or less. The part number for this item is SES9200ICPWB and it fits 2015-2017 Ford Mustang (2.3 EcoBoost Models).