4in Dia Speedometer 180 MPH Elec Programable

The 4in Dia Speedometer 180 MPH Electric Programmable by AUTOMETER is a precision instrument cluster upgrade designed for serious automotive enthusiasts and professional mechanics building high-performance vehicles. Whether you're installing a modern engine swap, upgrading a classic restoration, or fine-tuning a track car, this electric speedometer provides accurate velocity monitoring in a compact 4-inch diameter gauge face. The 180 MPH maximum reading makes it ideal for performance applications where OEM clusters fall short or when custom instrumentation is required for modified powertrains.

This programmable electric speedometer operates on electronic input signals, eliminating the mechanical cable dependency of older analog designs and reducing parasitic drag on engine performance. AUTOMETER's engineered construction delivers reliable signal processing and needle response across the full 0–180 MPH range, with adjustable calibration settings that allow technicians to match the gauge to vehicle-specific sensor outputs, transmission ratios, or tire diameters. The compact mounting footprint—6.25 x 5.8 x 6.5 inches—fits seamlessly into custom gauge clusters, custom dash pods, or OEM openings, while the durable construction withstands vibration, temperature fluctuations, and extended use in harsh underhood environments.

Mechanics restoring vintage vehicles with modern drivetrains, drag racers monitoring top-end performance, and engine builders validating final tune-ups rely on this gauge for real-time feedback. Installation requires a 12-volt power source and compatible speed sensor input (vehicle-dependent), making it compatible with most aftermarket engine management systems, LS swaps, and carbureted conversions fitted with electronic speedometer signals. Proper calibration during final dyno testing or road validation ensures accuracy across all driving conditions.