Suggested Retail: $39.99. LSU 4.9 Lambda WideBand O2 Oxygen Sensor for AEM 30-4110 30-0300 30-0310 - X Series AFR Inline Controller - UEGO A/F Ratio Wideband 02 Gauge - This O2 Oxygen Sensor is a perfect fit for most 4.9 LSU Wideband Controller Gauges including AEM 30-4110 Digital Wideband UEGO Gauge, AEM 30-0300 X-Series Digital Wideband UEGO AFR Gauge, and AEM 30-0310 X-Series Inline Wideband UEGO AFR Controller. It replaces OE numbers 17025, 0258017025, 304110, 300300, and 300310. The sensor is made from high temperature resistant material and double laser-welded stainless steel body, ensuring durability and long life. It provides a signal that is proportional to the amount of oxygen in the exhaust, helping to monitor and optimize engine efficiency and performance. Brand: Gledewen Model: GW-QCGQ05 -- LOT STICKER: BB-BOX-BOX00000132-ITEM-LPNRRGP9522454-25379681 -- SIZES ARE ESTIMATED. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.