The NTK 24023 Oxygen O2 Sensor is a high-quality direct fit sensor designed for Mazda and Kia vehicles from 1994 to 1998. Manufactured by NGK, this sensor is a single unit with a 1-year manufacturer warranty. It is a vital component for monitoring and controlling the oxygen levels in the exhaust system, ensuring optimal performance and emissions. The sensor is a 4-wire unit and is specifically designed for upstream or downstream installation, providing reliable accuracy and durability for your vehicle.