{"product_id":"wideband-uego-air-fuel-ratio-gauge-kit-2-1-16-x-series-30-0300-afr-o2-sensor","title":"Wideband UEGO Air Fuel Ratio Gauge Kit 2-1\/16\" X-series 30-0300 AFR O2 Sensor","description":"\u003ch2\u003eWideband UEGO Air Fuel Ratio Gauge Kit\u003c\/h2\u003e\u003cp\u003eThis wideband UEGO air fuel ratio gauge kit provides real-time AFR readings with a 2-1\/16\" X-series display and an included Bosch O2 sensor, referencing gauge part 30-0300.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe wideband UEGO gauge kit delivers accurate air\/fuel ratio data essential for engine tuning, forced induction setups, and performance diagnostics. With fast-responding sensor technology, this wideband gauge helps drivers monitor combustion health and prevent lean or rich conditions under load. Suited for tuners, track enthusiasts, and daily drivers seeking reliable wideband feedback.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBosch LSU 4.9 wideband O2 sensor provides fast, stable readings from 0.68 to 1.36 lambda.\u003c\/li\u003e\n\u003cli\u003eX-Series digital gauge with sleek 2-1\/16\" face displays AFR and lambda simultaneously.\u003c\/li\u003e\n\u003cli\u003eFree-air calibration allows sensor to be serviced easily without special tools.\u003c\/li\u003e\n\u003cli\u003e0-5V analog output connects to standalone ECUs or dataloggers for seamless tuning.\u003c\/li\u003e\n\u003cli\u003eLED backlight with multiple color options ensures visibility in bright or dark cockpits.\u003c\/li\u003e\n\u003cli\u003eIncludes weld-in bung and wiring harness for complete installation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eStreet and race tuning for naturally aspirated or forced induction engines.\u003c\/li\u003e\n\u003cli\u003eDyno testing to validate air\/fuel ratios and ignition mapping.\u003c\/li\u003e\n\u003cli\u003eDiagnosing lean or rich misfires and catalytic converter efficiency.\u003c\/li\u003e\n\u003cli\u003eMonitoring fueling during towing, hauling, or sustained high-load driving.\u003c\/li\u003e\n\u003cli\u003eIntegrating with aftermarket ECU systems for closed-loop lambda control.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30-0300\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGauge Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2-1\/16 in (52mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensor Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWideband UEGO (Bosch LSU 4.9)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGasoline AFR 8.0:1-18.0:1; Lambda 0.68-1.36\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAnalog Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0-5V linear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is the wideband sensor compatible with pump gas and ethanol blends? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, the LSU 4.9 sensor handles unleaded gasoline, E10, and moderate ethanol blends up to E85 when properly calibrated; sustained leaded fuel use may degrade sensor life.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this gauge require a separate controller? \u003cstrong\u003eA:\u003c\/strong\u003e No, the X-series gauge has a built-in controller that powers and interprets the wideband sensor directly, simplifying installation with just a single harness connection.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":44965061558358,"sku":"ZZ3A01347","price":227.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/57_a6490b9e-07f8-4633-a2e9-18567bd1774b.jpg?v=1781653199","url":"https:\/\/www.solidspare.com\/products\/wideband-uego-air-fuel-ratio-gauge-kit-2-1-16-x-series-30-0300-afr-o2-sensor","provider":"Solid Spare","version":"1.0","type":"link"}