Wideband Air/Fuel Gauge is Essential for Tuning & Mapping Out the Air to Fuel Ratios of Your Performance VehicleFor 4.9 wideband sensor and weld-in bung included PN 30-4110,No free air sensor calibration required ever.A 2-1/16 inch gauge housing ensures that it will fit in most gauge and can be remotely mounted virtually anywhere52mm (2-1/16inch) gauge housing0-5V analog output 10-20 AFR range onlyInterchangeable faceplates included for customizing gauge appearance (digital gauges only)for Bosch4.9 wideband sensor and weld-in bung includedNo free air sensor calibration required - everInterchangeable black and silver bezels includedInterchangeable faceplates included52mm (2-1/16 inch) gauge housing0-5v analog output (10-20 AFR range only)Name:Wideband Air/Fuel GaugeInterchange Part Number: Wide Band AFR Gauge KitApplicable models: 12V gasoline vehiclesItem:12V Digital Wideband Air / Fuel GaugePart Number: 30-4110Other Part Number: Includes Oxygen SensorCondition: 100% Newcolour: as shownMaterial: plastic + metalPackage Contents:1 30-4110 Fuel Wide band UEGOOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed is +/- 1-3cm.