Auto Meter Carbon Fiber 5 Pro-Comp Marine Tachometer 0-6000 RPM Offshore. Features front sealed bezel design for added water resistance and UV protected paint on dial pointer for added protection against sun damage. 12 and 16 volt compatible, well-suited with nearly every marine electrical system. Gauge kit includes bulb and socket assembly, red and green bulb covers, corrosion resistant mounting hardware, and detailed instructions for installation. AutoMeter’s race proven air-core electric tachometers provide quick and accurate readings with a needle so responsive it can go from 0 – full scale in 333 milliseconds. Compatible with 2, 3, 4, 6 pulse ignition signals (4, 6, 8 cylinder and V6 outboard engines) with points, electronic, and most 12V high-performance racing ignitions.