{"product_id":"fhrhry-wideband-uego-air-fuel-ratio-gauge-52mm-with-4-9-lsu-sensor-digital-afr-0-5v-output","title":"FHRHRY Wideband UEGO Air\/Fuel Ratio Gauge 52mm with 4.9 LSU Sensor — Digital AFR, 0–5V Output","description":"\u003cstrong\u003eFHRHRY's 52mm Wideband UEGO Air\/Fuel Ratio Gauge kit is a complete digital AFR monitoring system that includes a 4.9 LSU sensor, interchangeable bezels\/faceplates, and a 0–5V analog output for engine management and datalogging.\u003c\/strong\u003e\n\n\u003cp\u003eThis compact 2-1\/16\" gauge assembly delivers real-time air\/fuel ratio feedback for tuning and monitoring combustion. It combines a bright digital readout and an LED needle that changes color to indicate rich or lean conditions, while the included LSU 4.9 wideband sensor supplies fast, accurate oxygen readings without the need for free-air calibration. The kit's plug-and-play wiring and universal 52mm housing make it suitable for most instrument pods and aftermarket installations.\u003c\/p\u003e\n\n\u003ch3\u003eHow accurate and responsive is the 4.9 LSU sensor for tuning?\u003c\/h3\u003e\n\u003cp\u003eThe included 4.9 LSU sensor is designed for rapid, repeatable AFR measurements and quick response to changes in mixture. It reads fine increments of air\/fuel ratio so you can make precise adjustments during tuning or monitoring.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFast time response for transient conditions and throttle changes\u003c\/li\u003e\n  \u003cli\u003ePrecision across the listed AFR ranges so small adjustments are visible\u003c\/li\u003e\n  \u003cli\u003eNo free-air calibration required when used with this controller\u003c\/li\u003e\n  \u003cli\u003eWeld-in bung included for secure sensor mounting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat outputs and compatibility options does the gauge support?\u003c\/h3\u003e\n\u003cp\u003eThis gauge provides a 0–5V analog output compatible with most engine management systems and dataloggers, plus a clear digital display for in-cockpit monitoring. The 52mm housing fits the common 2-1\/16\" pod size, making it adaptable to many vehicles and installations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e0–5V analog output for AFR logging and closed-loop controllers\u003c\/li\u003e\n  \u003cli\u003eFits standard 52 mm instrument holes and most aftermarket pods\u003c\/li\u003e\n  \u003cli\u003eInterchangeable black\/silver bezels and black\/white faceplates for visual customization\u003c\/li\u003e\n  \u003cli\u003eConfirm device compatibility by model\/serial on the product nameplate\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich fuels and AFR ranges are supported and how are they displayed?\u003c\/h3\u003e\n\u003cp\u003eThe gauge displays AFR and outputs corresponding 0–5V signals over fuel-specific ranges so you can tune for gasoline, ethanol blends, E85, or methanol. Lambda values are also supported if you prefer stoichiometric ratios instead of AFR numbers.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGasoline: AFR 10.0–20.0 (0–5V mapping)\u003c\/li\u003e\n  \u003cli\u003eE85: AFR ~6.6–13.2 (0–5V mapping)\u003c\/li\u003e\n  \u003cli\u003eEthanol: AFR ~6.14–12.3 (0–5V mapping)\u003c\/li\u003e\n  \u003cli\u003eMethanol: AFR ~4.4–8.8; Lambda range 0.68–1.36\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat is included and how easy is installation?\u003c\/h3\u003e\n\u003cp\u003eThe kit ships with everything needed to install and start using the wideband gauge: sensor, bung, harnesses, bezels, faceplates, and connectors, plus an instruction sheet. Basic mechanical and electrical skills are sufficient for most installs; welding the bung is recommended for long-term sensor location, while the harness and plugs simplify electrical hookup.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e1x UEGO gauge assembly with digital display and LED needle\u003c\/li\u003e\n  \u003cli\u003e1x 4.9 LSU wideband sensor and weld-in O2 sensor bung\u003c\/li\u003e\n  \u003cli\u003eWiring harnesses, connectors, and installation instructions included\u003c\/li\u003e\n  \u003cli\u003eInterchangeable bezels and faceplates for customized appearance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: This FHRHRY wideband UEGO kit is aimed at tuners, performance enthusiasts, and workshop technicians who need reliable, fast AFR readings for engine tuning, dyno work, or monitoring. It’s ideal for gasoline or alcohol-fueled applications where a compact 52mm gauge, accurate 4.9 LSU sensing, and a 0–5V output for datalogging or ECU integration are required. Verify compatibility using the model\/serial information on your device before purchasing to ensure the parts match your application.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the gauge need free-air calibration?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. When used with this FHRHRY controller and its 4.9 LSU sensor, free-air calibration is not required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use the 0–5V output with my ECU or datalogger?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The 0–5V analog output is compatible with most engine management systems and dataloggers for AFR logging.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"FHRHRY","offers":[{"title":"Default Title","offer_id":67584901054649,"sku":"B09N9CY37T","price":219.44,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/fhrhry-front-gauge-face.jpg?v=1790458308","url":"https:\/\/redleafauto.ca\/products\/fhrhry-wideband-uego-air-fuel-ratio-gauge-52mm-with-4-9-lsu-sensor-digital-afr-0-5v-output","provider":"Redleaf Auto","version":"1.0","type":"link"}