---
product_id: 215515080
title: "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"
brand: "gledewen"
price: "10754 som"
currency: KGS
in_stock: true
reviews_count: 13
category: "Gledewen"
url: https://www.desertcart.kg/products/215515080-lsu-4-9-lambda-wideband-o2-oxygen-sensor-for-aem
store_origin: KG
region: Kyrgyzstan
---

# 12V max supply voltage OEM perfect fit & direct replacement 800°C max temp rating 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

**Brand:** gledewen
**Price:** 10754 som
**Availability:** ✅ In Stock

## Summary

> 🔥 Tune smarter, not harder — unleash your engine’s true potential!

## Quick Answers

- **What is this?** 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 by gledewen
- **How much does it cost?** 10754 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/215515080-lsu-4-9-lambda-wideband-o2-oxygen-sensor-for-aem)

## Best For

- gledewen enthusiasts

## Why This Product

- Trusted gledewen brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Wide Fitment Range:** Compatible with AEM 30-4110, 30-0300, 30-0310 X-Series controllers—avoid costly misbuys.
- • **Confidence-Backed Warranty:** 12-month worry-free replacement or refund for ultimate peace of mind.
- • **Seamless OEM Compatibility:** Engineered to strict OEM standards ensuring hassle-free plug-and-play replacement.
- • **High-Temperature Durability:** Built to withstand extreme exhaust temps up to 800°C for reliable long-term performance.
- • **Precision Oxygen Monitoring:** Sophisticated sensing element delivers accurate exhaust oxygen levels for peak engine tuning.

## Overview

The Gledewen LSU 4.9 WideBand O2 Sensor is a high-precision, OEM-standard oxygen sensor designed for AEM X-Series AFR controllers. It delivers accurate air-fuel ratio readings with a durable alloy steel build rated for exhaust temperatures up to 800°C. Compatible with multiple AEM models and replacing OE# 17025, it ensures seamless installation and reliable performance backed by a 12-month warranty.

## 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 ControllerReplaces OE#:17025, 0258017025, 304110, 300300, 300310O2 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 WarrantyAt 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.

Review: Better than Bosch - Works better than Bosch, I’ve been through 6 Bosch sensors and all failed anywhere from a week to a few months. I’ve put this sensor in and had been smooth as butter.
Review: 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

## Features

- 【HIGH PERFORMANCE】Our 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.
- 【Fitment】LSU4.9 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 NUMBER】17025, 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
- 【12-MONTH WARRANTY】If the wide band lambda sensor fails, stops working or any other problems, you can contact us through desertcart message to apply the service of carefree REPLACEMENT or REFUND

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0863P6YLQ |
| Best Sellers Rank | #14,074 in Automotive ( See Top 100 in Automotive ) #5 in Automotive Replacement Oxygen Sensors |
| Brand Name | Gledewen |
| Customer Reviews | 4.2 4.2 out of 5 stars (1,021) |
| EU Spare Part Availability Duration | 1 Years |
| Item Dimensions | 6.1 x 4.7 x 1.7 inches |
| Manufacturer | Gledewen |
| Material Type | Alloy Steel |
| Maximum Supply Voltage | 12 Volts (DC) |
| Measuring Range | 0% - 100% oxygen |
| Model | LSU 4.9 |
| Mounting Type | Flange Mount |
| Output Type | electrical signal |
| Part Number | GW-QCGQ05 |
| Smart Home Compatibility | Not Smart Home Compatible |
| Specific Uses For Product | Oxygen Sensor |
| Style Name | Digital |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 800 Degrees Celsius |

## Product Details

- **Brand:** Gledewen
- **Item dimensions L x W x H:** 6.1 x 4.7 x 1.7 inches
- **Material:** Alloy Steel
- **Maximum Supply Voltage:** 12 Volts (DC)
- **Style:** Digital

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/61tZJtMbNTL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Better than Bosch
*by F***G on March 16, 2026*

Works better than Bosch, I’ve been through 6 Bosch sensors and all failed anywhere from a week to a few months. I’ve put this sensor in and had been smooth as butter.

### ⭐⭐⭐⭐⭐ Does it's job
*by A***N on August 22, 2024*

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

### ⭐⭐⭐⭐⭐ great
*by J***N on March 14, 2026*

So far it's working great. Using it on my GlowShift A/F gauge

## Frequently Bought Together

- 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
- AEM 30-4110NS Digital Wideband UEGO Gauge without Sensor , Black , 6.025 inches

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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-05-01*