Rocker Box Mounting Kits come with all of the necessary lines and fittings to bolt an oil gauge to a 1984-1999 Big Twin "EVO" Motor. Mounts an oil pressure gauge to your Rocker Box for easy visibility. Includes Chrome plated 1/8” NPT male & female fittings, braided stainless steel oil line & Machined Aluminum Rocker Box Mounting Plate. Fits 1984-1999 Harley Big Twin “EVO” Evolution Touring/Softail/Dyna/FXR Models Fits 1-5/8” Oil Pressure Gauge Body (Oil pressure gauge NOT INCLUDED) Rocker Box Mounting Kits come with all of the necessary lines and fittings to bolt an oil gauge to a 1984-1999 Big Twin "EVO" 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 '84-'99 Harley Evolution Motor Comes with braided stainless steel oil line. Machined Aluminum Rocker Box Mounting Plate is Chrome Plated. Fits 1-5/8” Oil Pressure Gauge Body (Oil pressure gauge NOT INCLUDED)