AEM X-Series OBDII CAN Wideband Gauge Kit 30-0334 for Gen 3 HEMI

The AEM X-Series OBDII CAN Wideband Gauge Kit (30-0334) is one of the most advanced air/fuel ratio monitoring systems available for Gen 3 HEMI enthusiasts who demand accurate, real-time engine data. Designed for naturally aspirated and forced induction applications, this high-performance gauge utilizes the proven Bosch LSU 4.9 wideband oxygen sensor to deliver exceptionally fast and precise air/fuel ratio readings. Whether you’re custom tuning a 5.7L HEMI, 6.4L 392, 6.2L Hellcat, Trackhawk, TRX, or building a high-horsepower race car, monitoring AFR is essential for maximizing performance while protecting your engine from lean conditions.

Unlike traditional wideband gauges, the AEM X-Series features an advanced digital controller capable of significantly faster response times and greater measurement accuracy. Integrated OBDII CAN communication allows the gauge to broadcast wideband data directly to compatible engine management systems, data loggers, and tuning software. This makes it an excellent choice for vehicles using HP Tuners, aftermarket ECUs, or advanced data acquisition systems. During dyno tuning, remote tuning, or track use, having dependable AFR feedback allows tuners to make precise fuel adjustments that optimize horsepower, drivability, and engine safety.

The X-Series gauge features a bright, high-contrast digital display with programmable center readout and sweeping LED indicator ring, making it easy to monitor AFR at a glance in both daylight and nighttime driving conditions. The included Bosch LSU 4.9 sensor offers excellent durability and repeatable accuracy across a wide operating range, while the compact 52 mm (2-1/16″) gauge housing fits easily into most aftermarket gauge pods and interior installations. With a broad measurement range and quick sensor response, the AEM X-Series is equally at home in daily-driven street cars, drag racing applications, roll racing builds, road course vehicles, and dedicated competition cars.

At Dusterhoff Racing, we consider a quality wideband gauge one of the most valuable investments for any modified Gen 3 HEMI. Whether you’re adding a camshaft, long tube headers, flex fuel system, larger injectors, supercharger, turbocharger, or nitrous system, accurate AFR monitoring provides valuable insight into engine performance while helping prevent costly failures. Pair the AEM X-Series Wideband Gauge with our custom HP Tuners calibration and supporting performance upgrades to ensure your HEMI operates safely under every driving condition. For additional tuning equipment and monitoring accessories, browse our Engine Tuning & Gauges category for products designed specifically for Gen 3 HEMI performance vehicles.

Specifications & Features
Manufacturer: AEM Electronics
Manufacturer Part Number: 30-0334
Product: X-Series OBDII CAN Wideband Gauge Kit
Product Type: Digital Air/Fuel Ratio Gauge
Gauge Size:
52 mm (2-1/16″)
Display Type:
High-Brightness Digital LED Display
Display Features:
Programmable Center Readout
LED Sweep Ring
Sensor Included:
Bosch LSU 4.9 Wideband Oxygen Sensor
Air/Fuel Ratio Measurement:
Wideband Lambda / AFR Monitoring
Controller:
Integrated X-Series Digital Wideband Controller
Communication:
OBDII CAN Bus Output
AEMnet CAN Communication
Analog Output
Response Time:
Ultra-Fast Digital Processing
Accuracy:
Laboratory-Grade AFR Measurement
Vehicle Compatibility:
Universal Application
Ideal for Gen 3 HEMI Vehicles
Engine Compatibility:
5.7L HEMI
6.1L HEMI
6.2L Hellcat
6.4L (392) HEMI
Demon
Redeye
Trackhawk
TRX
Durango Hellcat
Year Compatibility:
Universal (application dependent)
Color:
Black Gauge Housing
Black Face
Multicolor Digital LED Display
Weight:
Approximately 1.5 lbs.
Installation:
Professional Installation Recommended
Uses:
Air/Fuel Ratio Monitoring
Dyno Tuning
Street Performance
Drag Racing
Roll Racing
Road Racing
Remote Tuning
Data Logging
Engine Protection
Compatible With:
HP Tuners
Aftermarket Engine Management Systems
Data Acquisition Systems
Benefits:
Extremely Accurate AFR Readings
Fast Sensor Response
Improved Tuning Precision
Helps Prevent Lean Engine Conditions
Supports Naturally Aspirated and Forced Induction Applications