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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 | Replace# 17025, 0258017025

  • Based on 1,064 reviews
Condition: New
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Availability: In Stock.
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Arrives Friday, Oct 23
Order within 9 hours and 41 minutes
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Features

  • HIGH PERFORMANCEOur wideband sensor use a more sophisticated sensing element that provides a signal that is proportional to the amount of oxygen in the exhaust, helps ensure your engine is constantly monitored and operating efficiently, while maximizing performance
  • Perfect Fit Made in strict accordance with OEM standards and tested in multiple layers before leaving the factory, it matches the original sensor and can be directly replaced.
  • FitmentLSU4.9 Wideband Controllers with part numbers 30-4110 Wideband UEGO Gauge, 30-0300 X-Series Wideband UEGO AFR Gauge, 30-0310 X-Series Inline Wideband UEGO AFR Controller | Most 4.9 LSU Wideband Controller Gauge
  • REPLACE OE NUMBER17025, 0258017025, 304110, 300300, 300310. A lot of buyers brought the wrong A/F gauge sensor because they don't pay attention to the plug and the length of the sensor. Please check these 2 features before purchase

Description

Fitments:Most 4.9 LSU Wideband Controller GaugeAEM 30-4110 Wideband UEGO GaugeAEM 30-0300 Wideband UEGO AFR GaugeAEM 30-0310 Wideband UEGO AFR Controller Replaces OE:17025, 0258017025, 304110, 300300, 300310 O2 Sensor Installation Steps①Disconnect the batteryPrevent accidental short circuits.②Locate the old sensorUsually found on the exhaust manifold or pipe.③Unplug the sensor connectorCarefully disconnect the wiring harness.④Remove the old sensorUse an O2 sensor socket or wrench to unscrew.⑤Clean the sensor portRemove any rust or debris from the threaded hole.⑥Apply anti-seize compound (if not pre-applied)On the threads only, avoid the sensor tip.⑦Install the new sensorThread it in by hand, then tighten with a wrench (do not overtighten).⑧Reconnect the sensor wiringPlug the harness back in securely.⑨Reconnect the batteryRestore power to the system.⑩Start the engine and check for codesQuality Guarantee:12-Month Warranty At Gledewen, we take pride in the quality of our products and in your satisfaction. If you have any problems, do not hesitate to contact us.

Brand: Gledewen


Item dimensions L x W x H: 6.1 x 4.7 x 1.7 inches


Material: Alloy Steel


Style: Digital


Maximum Supply Voltage: 12 volts_of_direct_current


Maximum Supply Voltage: 12 volts_of_direct_current


Measuring Range: 0% - 100% oxygen


Mounting Type: Flange Mount


Output Type: electrical signal


Specific Uses For Product: Oxygen Sensor


Upper Temperature Rating: 800 °C


Material Type: Alloy Steel


Style Name: Digital


EU Spare Part Availability Duration: 1 years


Item Dimensions: 6.1 x 4.7 x 1.7 inches


Brand Name: Gledewen


Model: LSU 4.9


Number of Items: 1


Number of Packs: 1


Manufacturer: Gledewen


Unit Count: 1 Count


Part Number: GW-QCGQ05


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Oct 23

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Quality of the part
Well, I didn’t like it because it only lasted three days so I have tried to reach somebody but nobody ever called me back or let me know so I’ll probably never ever ever order anything again
Reviewed in the United States on August 11, 2023 by The part only lasted like three days wasn’t happy at all with the product would’ve like to try to get another one, but nobody ever got back to me so I guess so but we wouldn’t order another one wasn’t very happy. Thank you.

  • Does it's job
It's A wide band sensor. It fits how it should, it seems to be quite accurate as it is hooked up to an AEM gauge and my AFR readings are what I would expect them to be. The overall quality of the sensor is very high, the connector fit perfectly into my AEM wideband connector and it's been on there for some time now and is still doing its job. Phenomenally. As far as installation of a wideband sensor, if you need to retain your second O2 sensor, you will need to buy an additional bung drill the whole weld the bung, and then install the O2 sensor like you would any other sensor. And as long as it's not too far behind your second O2 sensor, your readings should be pretty good. Ideally you'd want The sensor to be plumbed in near your upstream O2 sensor but I have tti long tubes and my upstream sensor is not in my merge collector which seems kind of like a mishap on their end, but I digress. It's a great sensor. It does its job. It seems to be very accurate and it's a very good price. 10 out of 10 would recommend ... show more
Reviewed in the United States on August 22, 2024 by Andrew Horan

  • Broke within 24 hours
Stopped working not even 24 hours later. Waste of time
Reviewed in the United States on October 1, 2026 by Devon

  • Great product
Went with this instead of shelling out for a AEM one works perfectly with my AEM A/F gauge. 2005 sti.
Reviewed in the United States on July 20, 2026 by Micah

  • Replaces AEM sensors
Fixed my miss reading AEM 30-300 wideband.
Reviewed in the United States on August 6, 2026 by Best_Salad

  • They work but I’m not sure how accurate
It fits my AEM wideband connector, I’m hesitant on the accuracy of the readings. Might be my fuel trims fluctuating. Side note, make sure you disconnect and/or remove O2 sensors prior to welding on exhaust. Probably a good idea to disconnect the battery too.
Reviewed in the United States on March 17, 2026 by Christian Thompson

  • Funciona
Funciona perfectamente igual que el original AEM
Reviewed in the United States on July 28, 2026 by Excelente producto! Exactamente lo que describen! Le quedó perfecto a mi 05 Nissan 350Z

  • Plugged right in to existing gauge
Can't speak to longevity but it worked great as a replacement for the one that came with my AEM X-series AFR gauge. Has allowed me to get my carbs tuned and plug color seems to correlate with gauge readings. Not sure how long it'll last, but so far so good.
Reviewed in the United States on April 25, 2026 by Nick

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