This Turbosmart blow off valve is a perfect fit for Subaru WRX and Sti models from 2001 to 2014. It comes with two ports and is a great addition to any engine performance upgrade. The valve is designed to regulate the airflow and prevent it from flowing back into the engine, which can cause damage. This high-quality blow off valve is made by Turbosmart, a trusted brand in the automotive industry. It is compatible with various Subaru models and has a manufacturer part number of TS-0205-1016. Whether you are a professional mechanic or a DIY enthusiast, this blow off valve is a great choice for your Subaru.