【Perfect Fit】 The O2 Sensor Compatible with 2008 2009 2010 2011 2012 Honda Accord 2.4L / 2009 2010 2011 2012 2013 2014 Acura TSX 2.4L 【OEM Replacement】 The Oxygen Sensor Replaces# Upstream Oxygen Sensor: 234-9091 / Downstream Oxygen Sensor: 234-4462 【Main Function】 The Oxygen Sensor helps the engine control system adjust the fuel ratio by monitoring and providing feedback on the oxygen content in the exhaust. This helps improve combustion efficiency and fuel economy, ensuring the normal operation and performance output of the engine. 【High Quality】 Made from high-quality materials, our O2 Sensor has a long lifespan, providing your vehicle with long-term stability and excellent performance. 【Warranty】 One-year warranty, Friendly return policy and customer service. Any questions, please feel free to contact us, we will reply to you within 12 hours.