AEM X-Series Boost Pressure -30inHg 35psi Gauge

See Every Pound of Boost and Every Inch of Vacuum on a Single 52mm X-Series Face

The AEM 30-0306 X-Series Boost Pressure Gauge reads from -30 inHg to 35 psi (-1 to 2.5 bar) using X-Digital technology for fast, accurate pressure monitoring in turbocharged, supercharged, and naturally aspirated applications. The AEM 30-0306 displays boost and vacuum on a single sweep across the 52mm gauge face, giving tuners and daily drivers a clear, real-time view of manifold pressure without adding multiple gauges to the dash. A black bezel and reversible faceplate are included. The 30-0306 includes a 0-5V analog output for datalogger or boost controller integration, and universal fitment works in any vehicle or test bench with a 1/8-inch NPT vacuum or pressure port connection.

Key Features

• AEM 30-0306 X-Digital technology for fast, accurate boost and vacuum pressure display
• Range: -30 inHg to 35 psi (-1 to 2.5 bar) on a single gauge face
• 52mm housing fits standard A-pillar pods, custom dash panels, and roll cage mounts
• 0-5V analog output for boost controller, datalogger, or ECU integration
• Black bezel and reversible faceplate included for gauge face configuration
• Backlit X-Digital display for day and night visibility
• Universal fitment via standard 1/8-inch NPT pressure port connection
• Compatible with turbocharged, supercharged, and naturally aspirated applications

Specifications

What's Included

• 1 AEM 30-0306 X-Series boost pressure gauge
• Black gauge bezel
• Reversible black faceplate
• Pressure tubing and fittings for 1/8-inch NPT port connection
• Gauge wiring harness
• Instructions

About AEM Performance Electronics

AEM Performance Electronics has developed aftermarket performance electronics for over 30 years from Hawthorne, California. AEM produces wideband controllers, boost gauges, standalone ECUs, and data acquisition systems used by professional race teams and enthusiasts worldwide. The X-Series gauge platform represents AEM's current generation of X-Digital technology for fast, accurate sensor monitoring in performance and motorsport applications.

Frequently Asked Questions

The AEM 30-0306 reads from -30 inHg vacuum to 35 psi positive boost pressure, which is -1 to 2.5 bar. This range covers naturally aspirated vacuum monitoring and most turbocharged and supercharged boost pressure applications up to approximately 35 psi.

Yes. The AEM 30-0306 displays the full range from vacuum (-30 inHg) through boost (35 psi) on a single sweep of the 52mm gauge face, so both vacuum and boost are visible in a single glance without mode switching.

Yes. The 30-0306 includes a 0-5V analog output that can be connected to a boost controller, standalone ECU, or datalogger that accepts a pressure voltage reference signal. This allows the gauge to serve dual purpose as both a display and a sensor signal source.

The AEM 30-0306 uses a 52mm gauge housing, which fits standard 52mm A-pillar pods, custom dash panels, roll cage mounting brackets, and any gauge panel with a 52mm opening.

Yes. The AEM 30-0306 includes a black bezel and a reversible black faceplate. The faceplate can be flipped to show either the boost (psi) or vacuum (inHg) scale as the primary display orientation depending on the application.

The AEM 30-0306 connects via a standard 1/8-inch NPT fitting to a pressure port on the intake manifold, intercooler piping, or a T-fitting in the boost reference line. Most turbocharged and supercharged applications already have a 1/8-inch NPT port, or one can be added by a machine shop or fabricator.

The AEM 30-0306 reads up to 35 psi of positive pressure. Applications running more than 35 psi of boost will exceed the gauge's range. AEM offers higher-range boost gauge options for extreme boost applications above this level.

Yes. The AEM 30-0306 is a pressure gauge and its readings are independent of fuel type. It measures manifold pressure via a pressure tubing connection and will read accurately regardless of the fuel or injection strategy used in the build.

Installation Instructions

1. Identify a 1/8-inch NPT pressure port on the intake manifold or intercooler piping, or install a T-fitting into an existing boost reference line.
2. Mount the AEM 30-0306 in the 52mm gauge location.
3. Connect the pressure tubing from the intake port to the gauge's pressure fitting, keeping the line away from sharp edges and heat sources.
4. Connect the gauge wiring harness: 12V key-on power and chassis ground.
5. If connecting the 0-5V analog output to a boost controller or datalogger, route and connect the signal wire.
6. Start the engine, verify the gauge reads vacuum at idle, and check for boost on full throttle acceleration.

WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.