2-1/16in C2/S Boost/Vac Gauge 30in Hg/20psi

The 2-1/16in C2/S Boost/Vac Gauge 30in Hg/20psi from AutoMeter is a dual-range analog instrument designed for serious engine builders, tuners, and mechanics who demand real-time visibility into boost and vacuum conditions. Whether you're monitoring turbo boost on a modified engine, diagnosing intake vacuum on a carbureted platform, or fine-tuning fuel mixture during a dyno session, this mechanical gauge delivers reliable feedback where it matters most. This gauge exists because modern performance builds require precision diagnostics—guesswork costs horsepower and reliability.

The C2/S model features a white face with a 2-1/16-inch diameter housing, making it readable at a glance from the driver's seat or engine bay. Its mechanical operation eliminates electronic dependency and provides zero-lag response to transient boost spikes or vacuum fluctuations—critical when tuning ignition timing or boost control tables. The gauge reads 30 inches of mercury (Hg) on the vacuum side and 20 psi on the boost side, covering the full spectrum from naturally aspirated idle conditions through moderate forced induction applications. AutoMeter's analog design ensures durability under vibration and temperature extremes common in high-performance environments.

This gauge is ideal for turbocharged, supercharged, and carbureted engine platforms, as well as fuel-injected builds running vacuum-operated accessories. Installation requires a single vacuum line routed from the intake manifold or boost source, keeping wiring complexity minimal and reliability high. The compact 4.6 x 4.5 x 5-inch footprint fits standard dashboard pods, A-pillar mounts, or custom brackets without consuming excessive real estate. For street performance, off-road, and race applications alike, the 2-1/16in C2/S Boost/Vac Gauge remains an industry standard among builders who prioritize analog feedback over digital display dependency.