These 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 your oil gauge to your Rocker Box for easy visibility. 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 (Rocker Box Mount.) All lines and fittings are made of Steel. The Polished Stainless Steel Rocker Box Mounting Plate features a rubber grommet to help with vibrations and visibility. DOES NOT come with an Oil Pressure Gauge. Finish: Fittings - Chrome Mount - Polished Stainless Steel Dimensions: Length of Line - 12” Fitment: Fits 1984-1999 Harley Big Twin "EVO" Evolution Motors. FXST 1984-1999 FLST 1984-1999 FLT 1984-1999 FXR 1984-1999 FXD 1984-1999