Auto Meter 3-3/8 inch (85.7mm) Tachometer, 8,000 RPM, In-Dash, Sport-Comp features famous high performance movements designed with a seamless dashboard mount in mind for the ultimate driver information center. When you’re ready to put the best instrumentation available in your vehicle, don’t settle for slow and inaccurate factory equipment. Available in a variety of configurations and sizes to accommodate diverse applications. Operates on 4, 6, or 8 cylinder engines with points, electronic, and most 12V high performance racing ignitions.