Petcock AdapterAllows the use of a 22mm petcock in a fuel tank designed for Delphi fuel injection Original equipment in '01-'06 FXSTD, '03-'06 Dressers and '04-'06 Softail carbureted bikes Includes O-ring for a leak-proof seal Accepts any petcock that installs using a 22mm nut Chrome-plated finish for great looks