AEM X-Series Wideband UEGO AFR Gauge – Air/Fuel Ratio Monitoring

The AEM X-Series Wideband UEGO AFR Gauge delivers fast, accurate air/fuel ratio monitoring for tuned Subaru WRX and STI applications. Built with AEM’s X-Digital technology, this wideband system provides critical fueling data for high-performance street, track, and motorsport builds.

Ideal for turbocharged Subaru EJ and FA platforms running upgraded turbos, E85, aftermarket fuel systems, or standalone engine management, the X-Series Wideband helps monitor air/fuel ratios under boost and high-load driving conditions.

Features:

• 52mm gauge diameter
• Patented X-Digital wideband technology
• Fast-response air/fuel ratio monitoring
• Ultra-slim 0.825” overall gauge depth
• Gauge cup depth only 0.200”
• User-configurable AFR, Lambda, or O2% display
• Bosch LSU 4.9 wideband sensor included
• Auto-dimming display
• AEMnet CANbus output
• 0-5V analog output
• RS232 serial output
• Free-air calibration capability
• Black bezel and black dual-faceplate included

Specifications:

• AFR Range: 8.50:1 to 18.00:1
• Lambda Range: 0.58 λ to 1.23 λ
• Oxygen Range: 0.0% to 1.55%
• Gauge Size: 52mm / 2-1/16”
• Overall Gauge Depth: 0.825”
• Gauge Cup Depth: 0.200”
• Sensor Type: Bosch LSU 4.9
• Voltage Compatibility: 10–18 volts
• Response Time: Less than 20 milliseconds
• Output Type: AEMnet CANbus / 0-5V analog / RS232 serial

Ideal For:

• Subaru WRX & STI builds
• E85 applications
• Turbocharged street and track cars
• Standalone ECU setups
• Engine tuning and monitoring

Part Number:
30-0300