The filler plug of the Defender is the resin make.
This plug is tightened by high torque, suffer hardship also tightening loosening.
As a result, when one time this filler plug it pulls out, the head section and the screw becomes ragged.
Because of that, you do not have to reuse this plug.
At last year a certain English enterprise developed the brass make filler plug, I really tried using.
Because precision of screw side is doubtful, I think that it has made the brass make as correct.
But, the brass is not hard under any condition and long long time.
This brass make plug, I think that it does not withstand the reuse which occurs repeatedly.
