Originally Posted by tweitz
I would not be comfortable using the fill in plug as a permanent solution. I don't think they are designed for that.
that is exactly what the blanking plug is designed for. the blanking plug is designed to the same dimensions as the speed sensor and is to be used when the sensor is removed for cleaning or repair. the manufacturer recommends that the plug is left in when the sensor is not going to be used for more then a week to prevent fowling