This is a genuine OEM Honda/Acura Lambda Air Fuel Sensor with part number 36531-RBB-003. It is a direct fit and easy to install. The sensor type is air/fuel ratio and it was manufactured in Japan. This item is suitable for use in TSX vehicles from 2004 to 2008. It is a reliable choice for those in need of replacement parts in their exhaust and emission systems. Purchase this product confidently for your car and expect its high-quality performance.