Does anyone know where I can purchase an 18mm to 12mm bushing adapter for a rear O2 sensor. I am runnig a 96 SE-R ECU with a 98 Harness and need to do the Rear O2 sensor conversion according to Jim Wolf Technology.
see if you can buy a spark plug non fouler that will adapt to it. if you go to autozone or something they may have the right spark plug non-fouler there. or napa. it will have 18mm threads on one end and a 12mm female end on the other.