AEM 52mm O2 Air Fuel Wideband AFR Gauge Kit (30-4110)
Description
Description
The AEM 52mm O2 Air Fuel Wideband AFR Gauge Kit is designed to deliver accurate, real-time air/fuel ratio monitoring for performance street and motorsports applications. By providing precise AFR data through a wideband oxygen sensor, this gauge helps tuners and enthusiasts optimize fueling, improve engine safety, and maintain consistent performance in naturally aspirated and forced-induction setups.
KEY FEATURES
- Wideband air/fuel ratio gauge provides accurate AFR monitoring
- Includes wideband O2 sensor and controller for complete installation
- Real-time AFR data supports precise tuning and diagnostics
- Bright, easy-to-read 52mm gauge fits standard aftermarket gauge pods
- Ideal for street performance, track use, and engine tuning applications
TECHNICAL SPECIFICATIONS
- Gauge Type: Wideband air/fuel ratio (AFR) gauge
- Gauge Diameter: 52mm
- Sensor Type: Wideband oxygen (O2) sensor
- Application: AFR monitoring for performance and tuned engines
- Design Intent: Provides accurate fueling data to support engine tuning and protection
VEHICLE FITMENT
- Universal
AEM designs precision-engineered performance electronics, gauges, and fuel system components built to deliver accurate data, reliable fuel delivery, and confidence for street, performance, and motorsports applications.



