Enhance your vehicle's performance with the Marsflex Oxygen Sensor, specifically designed for downstream placement on a variety of Subaru and Saab models including the Legacy, Outback, Forester, and Saab 9-2X with a 2.5L engine. This sensor ensures a precise fit as a direct replacement with the OE/OEM part numbers 22690-AA810 and 22690-AA81A, accompanied by a manufacturer part number of 234-4445. The sensor features a 4-wire mini-blade connector for easy installation and is bundled with a gray connector. With its robust design and compatibility with vehicles from the year 2003 onwards, this oxygen sensor is an essential component for maintaining your vehicle's emission control and fuel efficiency.