This K&N filter replaces the common PH-16 which most remote oil housing adapters use. I am planning on flying with this filter K&N part number HP-2004. Here is the link....thoughts???? http://www.knfilterchargers.com/search/product.aspx?Prod=HP-2004
Mark Jones (N886MJ) Wales, WI USA E-mail me at flyk...@wi.rr.com Visit my KR-2S CorvAIRCRAFT web site at http://mywebpage.netscape.com/n886mj/homepage.html