You can buy an OEM Bosch 02 sensor for under $100 at Advance Auto, make sure you get the one with the connector already attached so it just plugs right in to the harness.















If you don't have a special socket for removing the sensor, you can use a 6 point 22mm deep socket, just cut the wire off the old sensor first. Use an adjustable wrench to tighten the new one. Crack the old sensor loose quickly so it comes out without stripping. It might help to have the exhaust pipe hot from running the motor.