Free shipping on eligible orders of $100 or more. Oversized and freight items excluded.

Shop parts / AEM / New

AEM Digital Wideband UEGO Gauge w/o Sensor

AEM · New

AEM Digital Wideband UEGO Gauge w/o Sensor

MPN 30-4110NS · Store SKU aem30-4110NS

$175.95
IN STOCK6 ready to ship

Supplier stock checked 11/7/2026, 8:48:45 AM UTC. Adding a part does not reserve it.

30-day returns for unopened, unused new parts

Request a return within 30 calendar days after delivery. New parts must be unopened and unused.

Shipping & returns ↗This policy does not limit rights required by law.

Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.

Product details

Accurate AFR data is critical when tuning an engine. Running rich (very low air/fuel ratio, excessive fuel) can cause a loss in power, while running too lean (very high air/fuel ratio, not enough fuel) may result in serious engine damage. Using a wideband air/fuel controller during the tuning process allows you to monitor AFR and adjust tuning parameters to optimize them for maximum power and efficiency. AEM has a comprehensive line of highly accurate, reliable wideband air/fuel controllers that can help ensure your vehicle is optimally tuned. Some of our competitors require that you frequently perform a free-air calibration procedure to calibrate their O2 sensors. This process involves removing the sensor from the bung while still connected to the controller device, then waving the sensor in the air so it can read atmospheric O2 levels. We use Bosch 4.9 LSU sensors in our wideband controllers. Our sensors are individually laboratory-calibrated by Bosch and never require free air calibration! AEM's legendary Digital Wideband O2 AFR UEGO Gauge is a wideband UEGO air/fuel ratio controller (AFR) and gauge in one. It unites accuracy, speed and control with an easy to read, digital LED display and sweeping LED "needle" that changes colors as AFR changes from rich to lean. Using the above sensors ensures that the factory sensor calibration is accurate and that the controller performs optimally. The use of any non-approved sensor may affect the controller's operation, and will void the warranty of the 30-4110NS. AEM's Wideband UEGO (Universal Exhaust Gas Oxygen, pronounced "You-Way-Go") Controllers are powerful, cost effective tuning tools that allow users to accurately monitor the Air/Fuel Ratio (AFR) of their engine. AEM's part number 30-4110NS Wideband UEGO air/fuel ratio Controller Gauge is sold without a wideband sensor. This allows users to source a Bosch 4.9LSU sensor separately to potentially save money. AEM tested many sensors with the 30-4110NS, including popular inexpensive knockoff sensors, and determined that only the following sensors will deliver reliable performance: Digital Wideband UEGO Gauge, does not include sensor, must use 4.9LSU sensor with gauge AEM Classic Digital Wideband AFR Gauge (Sensor Not Included) The Original Wideband Air/Fuel Ratio Gauge (No Sensor) WHAT IS A WIDEBAND UEGO AIR/FUEL CONTROLLER? Digital Wideband UEGO Gauge without Sensor WHY USE A WIDEBAND AIR/FUEL CONTROLLER? WHAT IS FREE-AIR CALIBRATION?

Manufacturer fitment & guides

Check 30-4110NS against the manufacturer’s application information below.

Part-specific notes

  • California Proposition 65: Y

Manufacturer documents

More from AEM ↗See the JuiceBuilt workshop ↗

YOUR NEXT MOVE

Your build.