The AEM X-Series Wideband UEGO is a 52mm (2-1/16 in) air/fuel ratio gauge that reads AFR, Lambda, or O2% on a user-configurable digital display with a 3- or 4-digit readout. It provides a 0-5V analog output plus RS232 and AEMnet (CANbus) for data logging and feedback control, covers an 8.5:1 to 18:1 AFR range, and runs on supply voltages up to 16V. This 30-0300NS version ships as the gauge only and does not include a wideband oxygen sensor. It auto-detects AEM FAE and Bosch LSU 4.9 sensors, which are sold separately.
| Type | X-Series Wideband UEGO Air/Fuel Ratio Gauge |
| Gauge Diameter | 52mm (2-1/16 in) |
| Depth | 0.825 in overall (0.200 in gauge cup) |
| Display | Digital, user-configurable (AFR / Lambda / O2%), 3- or 4-digit |
| AFR Range | 8.5:1 to 18:1 |
| Output | 0-5V analog, RS232, AEMnet (CANbus) |
| Sensor | Not included (auto-detects AEM FAE and Bosch LSU 4.9, sold separately) |
| Supply Voltage | Up to 16V |
| Finish | Black bezel with black double-sided faceplate |
| Part Number | 30-0300NS |
| Warranty | 1 Year Manufacturer's Warranty |
Documents: Installation Instructions (PDF)
Shipping: In-stock orders placed before 4 PM EST ship the same day, with standard, expedited, and overnight options available at checkout. Backordered items ship as soon as our distributor restocks — contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
