General description Universal 3.75 inch 12V White LED Backlit Tachometer Gauge with Red Shift Light is designed for use in gasoline vehicles with 4, 6, and 8 cylinder engines. This tachometer provides accurate RPM readings from 0 to 8000 RPM, making it an essential tool for monitoring engine performance. Technical specifications Measurement Range: 0~8000 RPM Power Supply: 12V DC Backlight: White LED Shift Light: Red Size: 3.75 inch Material: ABS Allowed Measurement Error: +/- 1-3 cm Compatibility and accessories Compatible with 4, 6, and 8 cylinder gasoline engines Package Contents: 1 x Tachometer Gauge 1 x Installation Kits 1 x User Manual