yeah no issues for me and haven't heard of any failures from the 300+ people that have purchased them from me. I do have a new version of the sensor I've been getting. The cage as I call it at the end of the sensor is brass instead of plastic with air flow holes around it. I couldn't say if its an improvement in the design as I didn't see anything wrong with the old sensors, but in any case there has been a design change, and I am now selling the new ones.
http://rotarycarclub.com/rotary_foru...1&d=1353508094