- OE Number Replacement: Replaces OE numbers 22641AA360, 22641AA36A, 32010412, and 234-9123. Ensure compatibility by checking fitment details and product images in the listing. - Vehicle Compatibility: This oxygen sensor is designed for specific models, including: - Saab: 2005-2006 9-2X 2.5L, 2005 9-2X 2.0L H4. - Subaru: 2006-2011 Forester 2.5L, 2005-2012 Impreza 2.0L and 2.5L, 2005-2010 Legacy 2.5L, 2008-2009 Legacy 2.0L and 3.0L, 2005-2010 Outback 2.5L and 3.0L, 2010 Outback 3.6L, and 2010 Legacy 3.6L H6. - High Performance: Engineered to meet OE standards, this oxygen sensor is compatible with front, back, upstream, and downstream installations. Constructed from stainless steel and high-temperature resistant materials, it is designed to accurately monitor the air-fuel mixture and combustion conditions in your vehicle's exhaust system, optimizing engine performance and improving fuel efficiency. - Installation Guidance: For safe installation, allow the vehicle’s exhaust pipe to cool completely before beginning work. Take care not to damage the exhaust pipe or the oxygen sensor threaded components during disassembly. It is recommended to use professional tools for the installation process. - Practical Applications: - Routine Maintenance: Ideal for replacing worn or malfunctioning oxygen sensors to restore optimal engine performance and fuel efficiency. - Performance Upgrades: Perfect for vehicle enthusiasts looking to improve their car's engine response and reduce emissions. - Repair Solutions: A reliable choice for garages and mechanics to ensure accurate diagnostics and repairs for vehicles experiencing poor fuel economy or check engine light issues.