{"title":"AEM Wideband Gauges","description":"\u003cp\u003eShop AEM wideband gauges for accurate air\/fuel ratio monitoring, engine tuning, and performance data on street, track, turbo, and race builds. AEM Wideband UEGO gauges and controllers are designed to help drivers and tuners monitor AFR readings across a wide range of applications, including EFI, carbureted, gasoline, ethanol, methanol, diesel, propane, and CNG setups depending on the product. This collection can include AEM X-Series wideband gauges, Classic Digital wideband gauges, O2 sensors, controllers, harnesses, and related accessories for builds that need reliable tuning feedback and engine protection.\u003c\/p\u003e","products":[{"product_id":"aem-classic-digital-wideband-afr-gauge-30-4110ns","title":"AEM Electronics Classic Digital Wideband AFR Gauge 30-4110NS","description":"\u003ch2\u003e\u003cstrong\u003eLegendary AFR Monitoring Without the Sensor\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe AEM Classic Digital Wideband AFR Gauge (PN 30-4110NS) is a trusted air\/fuel ratio monitoring solution for tuning high-performance engines. This model is sold \u003cstrong\u003ewithout the wideband sensor\u003c\/strong\u003e, allowing users to source a \u003cstrong\u003eBosch 4.9LSU sensor\u003c\/strong\u003e separately to save money. Featuring a digital LED display and a sweeping LED needle that dynamically tracks AFR changes, this gauge provides the accuracy, speed, and control that tuners demand.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSensor-Free Option:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned to work seamlessly with user-sourced \u003cstrong\u003eBosch 4.9LSU sensors\u003c\/strong\u003e, providing flexibility and potential cost savings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAccurate AFR Monitoring:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDisplays air\/fuel ratios (AFR) with precision, ensuring optimal engine tuning.\u003c\/li\u003e\n\u003cli\u003eSupports a \u003cstrong\u003e10-20 AFR range\u003c\/strong\u003e with a 0-5V analog output for data logging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIntuitive Visual Display:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBright \u003cstrong\u003edigital LED display\u003c\/strong\u003e with an easy-to-read numeric readout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSweeping LED needle\u003c\/strong\u003e changes color dynamically as AFR shifts from rich to lean.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFree-Air Calibration Not Required:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible Bosch sensors are pre-calibrated and do not require frequent recalibration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStandard Size and Versatile Integration:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e52mm (2-1\/16\") gauge housing\u003c\/strong\u003e fits most standard gauge pods.\u003c\/li\u003e\n\u003cli\u003e0-5V analog output connects to data loggers and engine management systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e AEM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 30-4110NS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGauge Diameter:\u003c\/strong\u003e 2-1\/16 inches (52mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAFR Range:\u003c\/strong\u003e 10-20 AFR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutputs:\u003c\/strong\u003e 0-5V analog output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Sensors:\u003c\/strong\u003e Bosch 4.9LSU (user-sourced)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmission 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sensors require no free-air calibration for hassle-free operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntuitive Display:\u003c\/strong\u003e LED display and sweeping needle provide real-time AFR feedback.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAFR Monitoring:\u003c\/strong\u003e Ideal for tuning carbureted and EFI engines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance and Racing Vehicles:\u003c\/strong\u003e Provides critical AFR data for optimizing power and efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eData Logging:\u003c\/strong\u003e Connects to engine management systems for advanced performance tracking.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eWhat’s Included:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAEM Classic Digital 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Perfect for precise engine tuning, this gauge ensures optimal performance and engine safety.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrder now and take control of your AFR monitoring with AEM!\u003c\/strong\u003e\u003c\/p\u003e","brand":"AEM","offers":[{"title":"Default Title","offer_id":36480557842600,"sku":"aem30-4110NS","price":155.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0496\/1016\/2344\/files\/aem-30-4110ns_1.jpg?v=1736688482"},{"product_id":"aem-bosch-lsu-4-2-wideband-uego-installation-kit-30-2002","title":"AEM Bosch LSU 4.2 Wideband UEGO Installation Kit - 30-2002","description":"\u003cp\u003eThe AEM Bosch LSU 4.2 Wideband UEGO Installation Kit is a premium solution designed to ensure precise air-fuel ratio measurement and reliable sensor installation. This kit includes a Bosch LSU 4.2 wideband sensor, sensor bung, connector, wire seals, and pins, providing everything needed for a professional-grade installation. Ideal for performance tuning and monitoring applications, this kit is built to meet the demands of high-performance enthusiasts and professionals. 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Designed with AEM's patented \u003cstrong\u003eX-Digital Technology (Patent 9,575,030)\u003c\/strong\u003e, this controller ensures the fastest response times, delivering real-time AFR data for safer and more efficient engine tuning. 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No. There is a laser-etched, calibrated resistor in the sensor's connector body. This resistor is specifically created for the exact sensor that it is attached to. Modifying this will invalidate the sensor's output.  * Independently tested at 360° Product Testing (results reported on August 31st, 2015) against 17 competitors wideband UEGO Air\/Fuel Controllers. AEM X-Series Inline with  4.9LSU wideband sensor and AEM X-Series Wideband UEGO AFR Gauge with  4.9LSU sensor recorded the fastest response times. ** Wideband UEGO sensors are wear items and their lifespan is determined by many factors including contamination from leaded fuels, automotive fluids, particulates, mechanical or thermal shock and from being unheated and exposed to the exhaust stream. Free-air calibration may correct drift as a sensor ages, but it is recommended that they are replaced as part of your vehicle's maintenance program. When performing free-air calibration, please follow the procedure outlined in the instruction manual. Display Gasoline values from 8.0:1 to 20.0:1 AFR Display Lambda values from .55 to 2.00 0-5V Output Gasoline values from 8.5:1 to 18.0:1 AFR CANbus Output Gasoline values from 8.0:1 to 20.0:1 AFR CANbus Output Lambda values from .55 to 2.00 0-5V Output Lambda values from .58 to 1.23 0-5V Output E85 values from 5.7:1 to 12.0:1 AFR 0-5V Output Ethanol values from 5.2:1 to 11.0:1 AFR 0-5V Output Methanol values from 3.75:1 to 8.0:1 AFR\u003c\/p\u003e","brand":"AEM","offers":[{"title":"Default Title","offer_id":50829187088552,"sku":"AEM30-0300","price":230.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0496\/1016\/2344\/files\/2f94eb85cadb0b78d694964be88e6514.jpg?v=1736185539"},{"product_id":"aem-x-series-wideband-uego-afr-sensor-controller-gauge-accessory-kit","title":"AEM X-Series Wideband UEGO AFR Sensor Controller Gauge Accessory Kit","description":"\u003cp\u003eThe AEM Wideband X-Series UEGO AFR Gauge has a user configurable display via buttons on the gauge face that allows you to change AFR values for different fuels, Lambda or O2%, change the center display to three or four digits, perform a free-air calibration if desired as the sensor ages, and change the CAN message ID when linking multiple X-Series Inline Controllers or X-Series Controller Gauges. A black bezel and black dual-faced faceplate for air\/fuel and Lambda are included, and an optional silver bezel with white dual-faced air\/fuel and Lambda faceplate is available (PN 30-0300-ACC, sold separately). An Auto Dimming feature is included. Locking connectors ensure a positive connection between the harnesses and gauge and a new single board design adds to the new gauge's durability.\u003c\/p\u003e","brand":"AEM","offers":[{"title":"Default Title","offer_id":50829187219624,"sku":"AEM30-0300-ACC","price":15.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0496\/1016\/2344\/files\/d06cb7f2f14275549593ee5aa98d23f0.jpg?v=1736185538"},{"product_id":"aem-x-series-obdii-wideband-uego-afr-sensor-controller-gauge","title":"AEM X-Series OBDII Wideband UEGO AFR Sensor Controller Gauge","description":"\u003cp\u003eAccurate 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.\u003c\/p\u003e","brand":"AEM","offers":[{"title":"Default Title","offer_id":50829187776680,"sku":"AEM30-0334","price":299.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0496\/1016\/2344\/files\/8ed9e396e386818b638ea93f78107ecc_06f92725-b4e1-470d-a42c-3c0c2f18e12b.jpg?v=1736185536"},{"product_id":"aem-digital-wideband-uego-gauge","title":"AEM Digital Wideband UEGO Gauge - 30-4110","description":"\u003cp\u003eAEM'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.  NOTE: The 30-4100 Wideband UEGO Gauge Controller that uses the 4.2 LSU sensor will be superseded to the 30-4110 Wideband UEGO Gauge Controller that uses the 4.9 LSU sensor in August 2014. Instructions for the 30-4100 will still be available in the Instructions tab after this change.  WHAT IS A WIDEBAND UEGO AIR\/FUEL CONTROLLER? 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.  WHY USE A WIDEBAND AIR\/FUEL CONTROLLER? 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.  WHAT IS FREE-AIR CALIBRATION? 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 4.9 LSU sensors in our wideband controllers. Our sensors are individually laboratory-calibrated and never require free air calibration!\u003c\/p\u003e","brand":"AEM","offers":[{"title":"Default Title","offer_id":50829198098600,"sku":"AEM30-4110","price":207.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0496\/1016\/2344\/files\/110330c787e2c6625cdbe32ebadc2648.jpg?v=1736185525"},{"product_id":"aem-power-harness-for-30-0300-x-series-wideband-gauge","title":"AEM Power Harness for 30-0300 X-Series Wideband Gauge","description":"\u003cp\u003eReplacement Power Harness for 30-0300 X-Series Wideband Gauge\u003c\/p\u003e","brand":"AEM","offers":[{"title":"Default Title","offer_id":50847038275752,"sku":"AEM30-3459","price":22.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0496\/1016\/2344\/files\/a8608285942fec3dd90bdb2627273dcc.jpg?v=1736185486"},{"product_id":"aem-universal-wideband-uego-sensor-with-stainless-manifold-bung-install-kit","title":"AEM Universal Wideband UEGO Sensor with Stainless Manifold Bung Install Kit","description":"\u003cp\u003eThese AEM LSU 4.2 sensors have a laser-etched, calibrated resistor in the sensor's connector body. This resistor is specifically created for the exact sensor that it is attached to. Modifying this will invalidate the sensor's output. The wideband sensor is laboratory-calibrated at the Bosch factory, accurate to 0.1 AFR and never requires free-air calibration when used with an AEM wideband AFR controller.\u003c\/p\u003e","brand":"AEM","offers":[{"title":"Default Title","offer_id":50864783065256,"sku":"AEM30-2063","price":167.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0496\/1016\/2344\/files\/348db9b9b9f7b45f80d8f07bb705d821.jpg?v=1736185480"},{"product_id":"aem-dual-channel-wideband","title":"AEM Dual Channel Wideband","description":"AEM Dual Channel Wideband","brand":"AEM","offers":[{"title":"Default Title","offer_id":53047593205928,"sku":"AEMVK080036","price":620.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0496\/1016\/2344\/files\/ChatGPTImageOct28_2025_01_07_55PM_75f73d40-662d-493b-80fc-348890ff54b2.png?v=1764888215"},{"product_id":"aem-x-series-wideband-uego-afr-gauge-no-sensor","title":"AEM X-Series Wideband UEGO AFR Gauge (No Sensor)","description":"X-Series Wideband UEGO AFR Controller Gauges were the fastest responding wideband air\/fuel ratio controllers in an independent test vs. 17 competitor wideband AFR controllers","brand":"AEM","offers":[{"title":"Default Title","offer_id":55188155367592,"sku":"AEM30-0300NS","price":169.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0496\/1016\/2344\/files\/ab195c210676e13d473af12c242212c2L.jpg?v=1769457142"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0496\/1016\/2344\/collections\/aem-wideband-gauges-afr-uego-tuning-gauges_9148e096-2947-4a85-938d-96b0289d942d.jpg?v=1778727783","url":"https:\/\/eliteracefab.com\/collections\/aem-wideband-gauges.oembed","provider":"eliteracefab.com","version":"1.0","type":"link"}