Oil filter housing?
The filter attaches to a pipe. Above the filter is the oil cooler and above it, is the filter flange.
Which part are you talking about?
If you have an oil leak from the top of the oil cooler, you just need to replace the o-ring.
http://www.youtube.com/watch?v=ZJ6gWGSWTY0
Thomas
Feb 19, 2013 at 12:36 AM