Denso O2 Sensor Replacement 2010 Toyota RAV4 Oxygen Sensor By TRQ OSA61279 Denso 234-9054 A/F Sensor It is constructed from durable material that is corrosion and abrasion resistant. Denso® 234-9054 - Air Fuel Ratio Sensor This sensor can easily be installed and ensures longevity. Model: DENSO Air/Fuel Sensor. Manufacturer: DENSO. Specific Uses For Product: Oxygen Sensor. Manufactured to detect the amount of exhaust gas air fuel... Denso Air and Fuel Ratio sensor is designed to detect the amount of the exhaust gas air and fuel ratio. Air Fuel Ratio Oxygen Sensor 234-9054 For 2004-2007 Toyota Highlander 2 Features zirconia solid electrolyte , Highly accurate , Easy installation