2-1/16in S/C Boost/Vacuum Gauge

The AutoMeter 2-1/16in Sport-Comp Boost/Vacuum Gauge (model 3303-M) is a mechanical analog pressure gauge designed for engine diagnostics and performance monitoring in street cars, race vehicles, and forced-induction applications. This gauge combines boost and vacuum measurement capability in a single 2-1/16-inch instrument, with a black face and analog needle readout that provides immediate, reliable feedback without electronic dependencies.

The gauge measures from -60 centimeters of mercury (full vacuum) to +2.0 bar (approximately 29 PSI boost), making it suitable for both naturally aspirated and turbocharged or supercharged engines. The mechanical design eliminates digital lag and electrical noise, delivering real-time pressure readings essential for tuning, diagnostics, and verifying boost controller function. The Sport-Comp series features AutoMeter's robust construction and calibration standards, ensuring long-term accuracy under underhood vibration and temperature cycling.

This boost/vacuum gauge is favored by engine builders, tuners, and enthusiasts who require direct pressure monitoring during cold starts, idle vacuum quality checks, and boost verification under load. The 2-1/16-inch diameter fits standard gauge clusters and aftermarket pod installations, while the black dial integrates with both modern and classic vehicle interiors. Technicians and performance shops rely on gauges like this to detect boost leaks, vacuum leaks, and fuel pressure anomalies before they become costly engine failures.