Hi Brendan. I have the same engine in my 2005 4/4 and fitted the K&N a few years ago. As Dave W said, it is a straight replacement, and is a standard item for the Ford Focus year 2000 approx model. You will need to remove the "elephant trunk" air hose, then unclip the top of the air filter box (at front) and just swap the filter. Part number is 33-2819 according to the box which I still have - but do check as these numbers can change. Cost about £35, and made a small but worthwhile improvement. Nigel

Last edited by nputtick; 25/08/15 06:58 PM.