Mercury - Oil Pressure Gauge L-H Engine Protection Monitoring White Face Chrome Bezel 79-8M6020024. OverviewThis L-H oil-pressure gauge gives you a clear, steady sense of how the engine's oil system is holding up while you're out on the water. The needle settles in smoothly, so real pressure changes stand out instead of getting lost in bumps or chop. It's the kind of gauge you check without thinking-quick look, quick answer, and back to the helm. Simple, clean, and easy to live with.. Key Featur