Great looking locking gas caps for Sportster, Big Twin and Twin Cam models. Locks are hidden by the skull that you can simply turn away to get access to the lock. Gas caps feature a knurled perimeter to ease opening and closing. Vented gas caps fit on Sportster as well as on the left gas tank bung on most Big Twin and Twin Cam models. Non-vented gas caps fit on the right gas tank bung on most Big Twin and Twin Cam models but can not be used to replace the fuel gauge on 1994-2017 Road King, 2000-2017 Softail, 1991-2017 Dyna and 1988-1994 FXR.

Note: Screw-in style gas caps In 2018 "The Factory" made a change in the gas cap bung and thread pitch. This change also applies to OEM replacement fuel tanks for earlier models supplied from early 2018 onwards. Gas caps listed as for "through early 2018" do NOT fit fuel tanks that are marked R090 or R091 as shown in the picture.