3-3/8in U/L Electric Speedo 0-200MPH

The 3-3/8in U/L Electric Speedo 0-200MPH by Autometer is an essential upgrade for custom car builds, restorations, and high-performance vehicles where accurate velocity readout is critical. This electric speedometer is purpose-built for automotive enthusiasts and mechanics who demand precision instrumentation that replaces outdated mechanical gauges or integrates into modern engine management setups. Whether you're building a custom hot rod, upgrading a classic muscle car, or installing a complete custom dash cluster, this speedo delivers reliable speed measurement up to 200 mph—ideal for street performance, track applications, and show-quality builds.

Autometer's electric speedometer operates independently of mechanical cable drive systems, responding directly to vehicle speed signals via electronic input—a design that eliminates friction loss and cable wear while enabling seamless integration with aftermarket engine computers and transmission controllers. The compact 3-3/8-inch bezel diameter fits standard automotive gauge pods, custom dash inserts, and universal mounting brackets without requiring extensive fabrication. The 0–200 mph range accommodates both street vehicles and high-speed applications, with smooth needle sweep and clear face markings that remain readable in varied lighting conditions. Electric operation also allows for fine calibration of speed readings through proper signal conditioning, making it adaptable to different tire sizes and gear ratios without mechanical adjustment.

Mechanics and fabricators favor this gauge for vehicles running standalone ECUs, fuel injection conversions, or engine swaps where original mechanical speedometers are incompatible or unreliable. Installation requires a 12-volt electrical connection and a vehicle speed signal input (typically from a speed sensor, transmission output, or engine management system), making it straightforward to wire into existing harnesses or custom electrical systems. The lightweight 0.84 lb design simplifies mounting in tight dashboard spaces, and the compact 6.75 x 5.2 x 7.35-inch footprint ensures it fits most gauge clusters without interference. This speedometer is an excellent choice for restoration shops, performance shops, and DIY builders seeking OEM-quality accuracy in a flexible, reliable electric package.