Oil tank plug comes with an analog oil temp gauge cleverly built into the top and a dipstick for checking oil level Chrome plated bezel cap and white face gauge make this a nice finishing touch to the bike Lets you add the convenience of an oil temp gauge without runnig all the extra lines and mounting brackets Accurately reads temperature from 50degF-350degF Replaces H-D OEM 62668-87T, 62667-87T