AEM X-Series Digital Temperature Gauge – 40°C to 150°C (30-0302)

Monitoring engine and drivetrain temperatures is critical for maintaining reliability and performance in any high-performance vehicle. The AEM X-Series Digital Temperature Gauge is designed to provide highly accurate, real-time temperature monitoring for coolant, oil, and transmission systems, helping drivers identify potential issues before they become costly failures.

Built for demanding street and motorsport applications, the X-Series combines advanced sensor technology with exceptional visibility and professional-grade functionality. The large central digital display is 87% larger than previous AEM gauge designs, while the sweeping LED outer ring provides instant visual reference during aggressive driving conditions.

Capable of monitoring temperatures from 40°C to 150°C (100°F to 300°F), this versatile gauge is suitable for coolant temperature, engine oil temperature, transmission fluid temperature, differential temperature, and other critical thermal monitoring applications.

With programmable warning thresholds, peak temperature recall, CAN-Bus communication, analogue outputs, and automatic display dimming, the X-Series offers professional-level monitoring and integration capabilities for modern performance builds.

Trusted by motorsport teams and professional tuners worldwide, AEM instrumentation provides the accuracy and reliability required to protect valuable engine and drivetrain components.

Carefully selected for builders who demand proven performance without compromise.

Why Monitor Temperatures?

Proper temperature monitoring helps:

✔ Prevent engine overheating
✔ Protect turbocharged engines under high load
✔ Monitor oil temperature for optimal lubrication performance
✔ Protect automatic and manual transmissions
✔ Improve reliability during motorsport use

Key Features

✔ Genuine AEM X-Series Digital Temperature Gauge
✔ Suitable for water, oil, and transmission temperature monitoring
✔ Large high-visibility digital display
✔ Sweeping LED outer reference indicator
✔ Peak temperature recall function
✔ Programmable warning thresholds
✔ CAN-Bus communication capability
✔ 0–5V analogue output for ECU and data logger integration
✔ Automatic display dimming sensor
✔ Ultra-slim installation depth

Technical Specifications

✔ Brand: AEM Electronics
✔ Part Number: 30-0302
✔ Product Type: Digital Temperature Gauge
✔ Gauge Diameter: 52 mm (2-1/16")
✔ Display Type: Digital LED
✔ Temperature Range:

• 100°F to 300°F
• 40°C to 150°C

✔ Display Units:

• Celsius (°C)
• Fahrenheit (°F)

✔ 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 Temperature 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

Monitoring Applications

✔ Coolant Temperature
✔ Engine Oil Temperature
✔ Transmission Fluid Temperature
✔ Differential Oil Temperature
✔ Auxiliary Fluid Temperature Monitoring

Additional Options

✔ Optional Silver Bezel & White Faceplate Kit Available (30-0302-ACC)

Includes:

✔ Silver Bezel
✔ White Water Temperature Faceplate
✔ White Oil Temperature Faceplate
✔ White Transmission Temperature Faceplate
✔ Black Oil Temperature Faceplate
✔ Black Transmission Temperature Faceplate

(Sold Separately)

Compatible Applications

✔ Street Performance Vehicles
✔ Drift Cars
✔ Drag Racing Vehicles
✔ Circuit Racing Vehicles
✔ Time Attack Cars
✔ 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