AEM X-Series Digital Voltmeter Gauge – 52mm (30-0303)

Stable electrical system voltage is critical for the reliable operation of modern performance vehicles. The AEM X-Series Digital Voltmeter Gauge provides highly accurate real-time voltage monitoring, allowing drivers and tuners to quickly identify charging system issues, battery problems, or electrical faults before they affect vehicle performance.

Designed for high-performance street and motorsport applications, the X-Series combines exceptional visibility with advanced monitoring capabilities in a compact 52 mm housing. The large central LED display is 87% larger than previous AEM digital gauges, while the sweeping LED outer ring provides instant visual reference at a glance, making voltage monitoring easier than ever under all driving conditions.

Despite its larger display area, the X-Series features an ultra-slim housing that allows installation virtually anywhere in the vehicle. Advanced functionality includes programmable warning thresholds, peak recall features, CAN-Bus communication, analog outputs, and automatic brightness adjustment for day and night driving.

Trusted by professional tuners and motorsport teams worldwide, AEM X-Series gauges provide the accuracy, reliability, and functionality required for serious performance vehicles.

Carefully selected for builders who demand proven performance without compromise.

Why Upgrade Your Voltage Monitoring?

Compared to factory charging system indicators:

✔ Accurate real-time voltage monitoring
✔ Early detection of charging and electrical system issues
✔ Large high-visibility digital display
✔ Programmable warning functions for added protection
✔ Ideal for performance and motorsport applications

Key Features

✔ Genuine AEM X-Series Digital Voltmeter Gauge
✔ High-visibility digital LED display
✔ Sweeping LED outer reference indicator
✔ Peak voltage recall functionality
✔ User-programmable warning thresholds
✔ CAN-Bus communication support
✔ 0–5V analogue output for ECU and data logger integration
✔ Automatic display dimming function
✔ Compact and shallow mounting design

Technical Specifications

✔ Brand: AEM Electronics
✔ Part Number: 30-0303
✔ Product Type: Digital Voltmeter Gauge
✔ Gauge Diameter: 52 mm (2-1/16")
✔ Display Type: Digital LED
✔ Voltage Range: 8–18 Volts
✔ Outer Display: Sweeping LED Indicator
✔ Peak Recall Function: Yes
✔ Warning Function: User Programmable
✔ Auto Dimming: Yes
✔ CAN-Bus Support: AEMnet Compatible
✔ Analog Output: 0–5V
✔ Overall Gauge Depth: Less Than 0.825" (21 mm)
✔ Cup Depth: 0.200" (5 mm)

Display Features

✔ 87% Larger Centre Display Compared to Previous AEM Gauges
✔ 33% Larger Overall Display Area
✔ High-Contrast Digital Readout
✔ Fast and Accurate Voltage Monitoring
✔ Excellent Day and Night Visibility

Connectivity & Data Logging

✔ AEMnet CAN-Bus Enabled
✔ Compatible with AEM Infinity ECU Systems
✔ Compatible with AEM Series 2 EMS
✔ Compatible with AEM AQ-1 Data Logger
✔ Compatible with Third-Party ECUs and Data Loggers Supporting AEMnet
✔ 0–5V Output for External Logging and ECU Integration

Additional Options

✔ Optional Silver Bezel and White Faceplate Kit Available (30-0303-ACC)

(Sold Separately)

Compatible Applications

✔ Street Performance Vehicles
✔ Drift Cars
✔ Drag Racing Vehicles
✔ Circuit Racing Vehicles
✔ Engine Swap Projects
✔ Standalone ECU Applications

Compatible Engines

✔ 1JZ-GE
✔ 1JZ-GTE
✔ 2JZ-GE
✔ 2JZ-GTE
✔ Toyota Performance Engines
✔ Lexus Performance Builds
✔ Universal Applications

Shipping

🇪🇺 EU Delivery: 5–10 Business Days
🌍 International Delivery: 7–21 Business Days