AEM Digital Wideband Gauge

Technical Specifications:

• Brand: AEM Performance Electronics

• Part Number (MPN): 30-4110

• Product Type: Classic Digital Wideband UEGO AFR Controller Gauge Kit

• Gauge Diameter: 2-1/16" (52mm)

• Sensor Included: Bosch LSU 4.9 Wideband O2 Sensor (with weld-in mild steel bung)

• Calibration: Factory calibrated resistor. No free-air calibration required, ever.

• Outputs: 0-5V Analog Output (for dataloggers/EMS) & RS-232 Serial Output

Performance & Fitment Features:

• Accurate AFR Monitoring: Fast-response controller delivering pinpoint accurate Air/Fuel Ratio readings. Includes interchangeable black/silver bezels and black/white faceplates to match your vehicle's interior.

• CRITICAL SENSOR INSTALLATION WARNING (WELDING REQUIRED): This kit requires welding the included O2 bung into your exhaust system. The sensor MUST be mounted at least 18 inches downstream from the exhaust port (or turbocharger) and MUST be angled at least 10 degrees above the horizontal position. Mounting the sensor at the bottom of the pipe will allow exhaust condensation (water) to shock and shatter the internal heated ceramic element. Sensor failure due to thermal shock or water damage is strictly excluded from the manufacturer's warranty.

• Fuel Compatibility & Sensor Life: Compatible with Gasoline, E85, Ethanol, Methanol, and Propane. Notice: Using heavily leaded racing fuels will significantly reduce the lifespan of the Bosch LSU 4.9 sensor.

Federal Emissions Compliance:

• Holley Emissions Code: 5

• Status: This part is classified as a monitoring and diagnostic device. It does not alter, replace, or bypass factory emissions control equipment. It is strictly legal for sale, installation, and street use in all 50 US states, including California. No CARB Executive Order (EO) is required.

Disclaimer & Warranty Information: Onyx Customs FL acts exclusively as an authorized retailer of high-performance automotive electronics. We do not manufacture this product. Exhaust fabrication and electronic wiring carry inherent risk. Improper installation, incorrect sensor angle, or improper wiring will result in immediate sensor failure or inaccurate AFR readings, which can lead to catastrophic engine damage if used for engine tuning. Onyx Customs FL assumes no liability for direct or indirect damages, engine rebuilds, or fabrication costs resulting from the incorrect installation or misuse of this component. All manufacturing defects are the responsibility of AEM Performance Electronics. Please note: Bosch LSU 4.9 oxygen sensors are considered consumable items and carry extremely limited warranties from the manufacturer. We strictly mandate that all welding and wiring be performed by a certified professional.