Review on CTA Tools 2066: The Ultimate Heavy-Duty Oxygen Sensor Socket for Professional Mechanics by Tom Podolski

I have been using this head for over three years to replace NOx sensors on Cummins ISX engines. Everyone in the garage I work in uses it too. Very high quality, there is a thick band around the center of the bushing that prevents it from expanding like other sensor bushings do when torque is applied. You can use a 1/2 inch ratchet or 1 inch wrench which is a good option. I did not find the sensor too tight or corroded for this instrument. Warranty work requires NOx sensors, which cost about $500 each.