【M-6880-B50 Fitment】: Our 90 Degree Billet Oil Filter Adapter is compatible for 1965-1995 Mustang 2011-2021 Ford Mustang & 2016-2018 Ford Focus RS. 【22mm Threads】: Compatible for Motorcraft FL-820, or FL-820S Motorcraft FL-500 or FL-500S filter. 【90 Degree Design】:The Ford M-6880-B50 90 Degree Oil Filter Adapter features a 90-degree design. Provides that much needed clearance for engine swaps and chassis modifications. 【Material】:M-6880-B50 90 Degree Billet Oil Filter Adapter is made of aluminium which have higher hardness and longer service life. 【Easy Installation】: Screw the adapter into the original oil filter location, there are detailed installation step-by-step instructions on the detail page.