This oxygen sensor from DENSO is a direct replacement for your Nissan Altima, Versa, or Sedan Hatchback as well as other models. It is designed to fit perfectly before the catalytic converter. It comes with a 1-year manufacturer warranty. DENSO sensor is a reliable choice for maintaining your vehicle's performance and is at an unbeatable price-point. The sensor has never been removed from its original packaging except to show photos of its new condition. Rest assured you will get a perfect product in a swift time. I usually ship out the next day if not on the same day.