Rocker Box Mounting Kits come with all of the necessary lines and fittings to bolt an oil gauge to a 1999-2017 Big Twin Twin Cam Motor. Mounts an oil pressure gauge to your Rocker Box for easy visibility. Chrome plated 1/8” NPT male and female fittings. Comes all of the appropriate Lines and Fittings to bolt on to an 1999-2017 Harley Twin Cam Motor Comes with an oil line. Machined Aluminum Rocker Box Mounting Plate is Chrome Plated. Oil pressure gauge NOT INCLUDED