To work on the oxygen sensor in your vehicle, use the ABN Oxygen Sensor Socket with Side Wire Cutout, 3/8” Inch Drive x 7/8” (22mm) – All Vehicle O2 Removal and Installation. This socket is compatible with all computer controlled engine vehicles and some motorcycles. As long as your car has an oxygen sensor with a 7/8” hexagon nut, you can use this socket to remove or install the O2 sensor. The 6-point beveled nose design securely grips oxygen sensor fasteners, preventing damage to the sensor. The side cutout allows you to easily slip the socket onto the sensor, preventing damage to wires and providing clearance for a wire harness so the wires do not get in the way when you’re working. The size is permanently etched on the chrome-vanadium steel exterior socket wall for your convenience.