Auto Meter Mechanical Boost Gauge, 0-15 PSI

Best use cases

When you want to keep an eye on boost pressure without relying on an electronic gauge, a mechanical setup offers a direct, simple approach. This Auto Meter Phantom gauge reads from 0 to 15 PSI.

Its 2-1/16-inch format is intended for a compact gauge installation. The kit includes a nylon line and fittings, so it provides key pieces for connecting the gauge rather than just the dial.

Picture checking the gauge while driving and seeing the reading on an illuminated dial. Would a mechanical reading suit your setup better than adding another electronic instrument?

Product specs

The gauge uses a mechanical movement and does not require the vehicle’s electrical system for its operation. Traditional incandescent lighting around the dial’s perimeter makes the face visible, and the kit includes a bulb and socket assembly plus red and green bulb covers.

The included connection parts are a 1/8-inch nylon line, 1/8-inch NPT compression fittings, and a 1/4-inch NPT adapter. Mounting hardware and installation instructions are also included. The range is 0 to 15 PSI, on the spec sheet, that gives you a clear boundary for deciding whether the scale suits the boost readings you need to monitor.

Where it shines

The appeal is straightforward: a mechanical movement, included line and fittings, and no electrical power required for gauge operation. That can make sense for a street or race vehicle where you want a dedicated boost reading without wiring the gauge itself into the electrical system. The incandescent illumination and included colored covers also give you options for the dial’s lighting appearance.

There is a practical tradeoff. Installation involves working with the supplied pressure line and fittings, rather than simply connecting an electrical sensor and display. The listed kit includes detailed instructions, but it does not specify extra line length or additional fitting options, so the included parts may not cover every custom mounting layout. The 0–15 PSI scale is another real limit: choose a gauge with a different range if your required readings fall outside it.

It’s a great fit if you want a mechanical boost gauge with its basic installation components in the box and prefer not to power the gauge electrically. It’s not for you if you want an electronic display or need a scale beyond 15 PSI. Compared with a more feature-rich digital setup, this one favors a direct dial and a mechanical connection over electronic readouts.

Is it worth it?

This gauge makes most sense when its range matches your vehicle’s needs and you value a simple, self-contained mechanical readout. The included nylon line, fittings, mounting hardware, and instructions give you a more complete starting point than buying a gauge alone, while the illumination components address nighttime visibility without changing how the gauge operates.

The main decision is fit, not feature count. If you want an easy-to-read boost dial and can use the provided range and connection parts, the Phantom is a focused choice. If your priority is an electronic display, a different scale, or installation without routing a mechanical line, another gauge style will better match that setup.