AutoMeter 3859 Digital Stepper Motor Boost/Vacuum Gauge 2-1/16" 30inHg-30PSI GS Series

The AutoMeter GS Series Digital Stepper Motor Boost/Vacuum Gauge delivers precision monitoring for forced induction applications. This 2-1/16" gauge features advanced digital stepper motor technology that provides exceptional accuracy, ultra-fast response time, and smooth needle movement for tracking boost and vacuum readings from 30 inHg to 30 PSI.

Advanced Technology:

• Digital stepper motor movement ensures unmatched accuracy and reliability
• Automatic calibration on every startup compensates for altitude, barometric pressure, and atmospheric conditions
• Data acquisition-grade solid-state MAP sensor provides precise readings even in harsh environments
• Compatible with 12V and 16V electrical systems

GS Series Styling:

• Black dial with translucent white markings for excellent readability
• Modern green LED through-the-dial lighting for clear nighttime visibility
• Fluorescent red pointer with futuristic styling
• Bright anodized super bezel with flat, clear lens
• 2-1/4" outer bezel diameter fits standard 2-1/16" mounting cup

Complete Installation Kit Includes:

• Solid-state MAP sensor
• Wiring harness for plug-and-play installation
• T-fitting and nylon tubing
• Vacuum fittings and mounting hardware
• Detailed installation instructions

Designed for gasoline engines, this gauge provides the critical data needed to maximize power output while keeping your engine safe and in the optimal powerband. Backed by AutoMeter's 1-year limited warranty.