Mercury – Oil Pressure Gauge L–H | Engine Protection Monitoring | Black Face | Black Bezel | 79-8M6020036Mercury Oil Pressure Gauge LH Engine Protection Monitoring Black Face Black Bezel 79 8M6020036 OverviewThis oil pressure gauge gives you a steady look at how the engines lubrication system is holding up while youre running. The needle settles into a smooth sweep, so any drop or spike stands out right away without forcing you to stare at the panel. Out on the water, it reacts naturally as you throttle up, idle down, or run through chop. Its a simple