X-Series Wideband UEGO AFR Sensor Gauge (Universal)
AEM ELECTRONICS
MPN: 30-0300
Price: $230.95 USD
Purchase details
In stock
Application requirements
Application notes
Application and compatibility
Supports compatible ECU or logger inputs through analog, RS-232 and AEMnet CAN outputs.
Description
AEM 30-0300 combines a 52 mm X-Series wideband controller with an AFR, lambda and oxygen-percentage display. Analog, RS-232 and AEMnet CAN outputs connect to compatible engine-management or logging equipment.
| Mounting cup | 52 mm |
| Bezel diameter | 61 mm |
| Overall depth | 21 mm; cup depth: 5 mm |
| Analog output | 0.5–4.5 V valid range corresponds to 8.5–18.0 gasoline AFR |
| Analog scaling | AFR = 2.375 × volts + 7.3125 |
| Outputs | Differential analog, RS-232 and AEMnet CAN |
| Power wiring | Switched 12 V with 5 A fuse and ground |
Key features
- Configurable, auto-dimming display
- Factory resistor calibration with optional free-air calibration
- 52 mm mounting cup with a shallow profile
- Black bezel and reversible black faceplate
Specifications
| Manufacturer part number | 30-0300 |
|---|---|
| Mounting cup | 52 mm |
| Bezel diameter | 61 mm |
| Overall depth | 21 mm; cup depth: 5 mm |
| Analog output | 0.5–4.5 V valid range corresponds to 8.5–18.0 gasoline AFR |
| Analog scaling | AFR = 2.375 × volts + 7.3125 |
| Outputs | Differential analog, RS-232 and AEMnet CAN |
| Power wiring | Switched 12 V with 5 A fuse and ground |
What's in the box
- X-Series wideband gauge
- Wideband oxygen sensor and sensor cable
- Power/IO cable
- Mild-steel weld-in sensor bung
- Mounting bracket, two nuts and rubber mounting band
- Four insulated butt connectors
Sensor type varies by production revision. Confirm the supplied sensor before ordering a replacement. Silver/white appearance kit and no-weld clamp kits are sold separately.
Install & Results
Install & Results
Custom installation requires a 52 mm mounting location, suitable exhaust sensor placement and power wiring.
Manufacturer documents
Use the instruction version matching the shipped sensor/controller. Keep the sensor harness uncut and protected from exhaust heat. Manual requires a leak-free exhaust, sensor downstream of any turbo and upstream of catalyst, and a sensor angle over 10° from horizontal. See full placement instructions before welding. The gauge is not waterproof; provide a dry mounting location.