The product is a Denso O2 oxygen sensor specifically designed for Subaru Legacy and Impreza models from 1995 to 1998. It is a downstream sensor with a 3-wire type and a direct replacement fitment type. The sensor comes with a 1-year warranty and is a genuine part manufactured by Denso, known for its high-quality automotive components. It is not a universal sensor and is designed to fit specific Subaru models, ensuring optimal performance and emission control.