Arlen Ness 15-655 Replacement Oil Pressure Gauge Accessories Finally a clean way to mount an oil pressure gauge on Big twin and Sportster engines Give a great view of the gauge and add style to your engine The finest assemblies Available; each is beautifully CNC-machined from aluminum, and each comes with a quality A.s.a.p.-Made Stainless Steel Hose assembly Replacement Gauge with original logo and colors.