This oil pressure display from Harley Davidson offers a scale of up to 60 PSI and is an indispensable instrument for monitoring the critical oil pressure in your engine. The display is characterized by a clear glass lens, which ensures precise reading without distortions. The fittings made of solid brass are immersed in glycerin, which improves vibration damping and increases measurement accuracy. The connection is made via a 1/8 "NPT connection on the back of the device.