Hi guys, I am new to this forum so sorry if this has already been anwsered. I have a coolant leak coming from the rear of the engine and have located it to a round black plug. Does anyone have any idea what it is called or any part numbers. Look at pics below.
http://i40.tinypic.com/2n04exj.jpg
It is the metal cap in later years and on the second pic it is the round ball on the bottom left.