A -4an connection on the rear of the gauge simplifies installation and no Electrical connection is necessary for operation, making it ideal for hardcore track cars. Autometer 4428 Ultra-Lite NOS Pressure Gauge, 2-5/8, 2000 PSI, Mechanical. Traditional incandescent lighting illuminates around the perimeter of the dial. AutoMeter's race proven mechanical instruments provide trusted accuracy while being simple to install.
No electrical system required for gauge operation - compatible with every street or race vehicle. Gauge kit includes, bulb and socket assembly, red and green bulb covers, mounting hardware, and detailed instructions for installation. Gauge threaded for -4AN, allowing an easy installation into the nitrous system. ATV, UTV, Motorcycle & Marine.