Oil Filter Billet Cap - Engineered Diesel - For filter FL-2016 Powerstroke 6.0L & 6.4L 2003 - 2010 Milled in house out of Billet aluminum and anodized black Powerstroke 6.0L & 6.4L 2003 - 2010 For filter FD-2016 (filter NOT included) Does NOT Include O-ring - Use O-Ring that comes with the new filter Oil Filter Cap