Karcher K4 | K5 Full Control Pressure Washer Set Back Foot 9.002-437.0
Genuine Karcher K4 and K5 Full Control pressure washer back foot with outlet pipe.
If your machine is leaking from this area then this is more than likely to be the item that has split, on the original part the 90 degree pipe was plastic and these seem to split.
The new version is a cast material so a lot stronger and is an upgraded version by Karcher.