---
product_id: 6692060
title: "AEM (30-4110) UEGO Air/Fuel Ratio Gauge"
brand: "aem"
price: "9769383₫"
currency: VND
in_stock: true
reviews_count: 4
url: https://www.desertcart.vn/products/6692060-aem-30-4110-uego-air-fuel-ratio-gauge
store_origin: VN
region: Vietnam
---

# Interchangeable faceplates & bezels 0-5V analog output for data logging 52mm compact gauge housing AEM (30-4110) UEGO Air/Fuel Ratio Gauge

**Brand:** aem
**Price:** 9769383₫
**Availability:** ✅ In Stock

## Summary

> 🚀 Tune like a pro, look like a boss.

## Quick Answers

- **What is this?** AEM (30-4110) UEGO Air/Fuel Ratio Gauge by aem
- **How much does it cost?** 9769383₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/6692060-aem-30-4110-uego-air-fuel-ratio-gauge)

## Best For

- aem enthusiasts

## Why This Product

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

## Key Features

- • **Real-Time AFR Alerts:** Digital LED display with color-changing needle instantly notifies you of even 0.1 AFR shifts—never miss a beat.
- • **Seamless Integration:** 0-5V analog output ensures compatibility with data loggers and engine management systems for pro-level tuning.
- • **Customizable Aesthetic:** Switch between black & white faceplates and black & silver bezels to match your cockpit vibe effortlessly.
- • **Precision Bosch 4.9 LSU Sensor:** Experience lightning-fast, calibration-free accuracy that keeps your engine safe and optimized.
- • **Universal Fit & Remote Mounting:** Compact 2-1/16 inch housing fits most pods and can be mounted anywhere for ultimate flexibility.

## Overview

The AEM (30-4110) UEGO Air/Fuel Ratio Gauge features a compact 52mm housing with interchangeable faceplates and bezels for personalized style. Equipped with a Bosch 4.9 LSU wideband sensor, it delivers fast, accurate AFR readings without the need for free-air calibration. Its digital LED display and color-changing needle provide real-time feedback, while the 0-5V analog output supports advanced data logging and engine management integration—making it an essential tool for maximizing engine performance and safety.

## Description

Our World-famous Wideband O2 air/fuel ratio UEGO gauge features a digital LED display and sweeping LED 'needle' that changes colors as AFR changes from rich to lean. A 52mm (2-1/16") gauge housing ensures that it will fit in most gauge pods and can be remotely mounted virtually anywhere. All AEM digital gauges feature a 0-5V analog output for use with data loggers and almost any engine management system. Each gauge comes with black and silver bezels and black and white faceplates for multiple color combinations and a custom look (a black Lambda faceplate and black and white Air/Fuel Ratio faceplates). The Bosch UEGO sensor gives the controller its speed and accuracy. The Bosch 4.9 LSU sensor used in the AEM Wideband UEGO AFR Controller Gauge has a faster light off time and draws less current than the 4.2 LSU sensor used with AEM's 30-4100 Wideband UEGO Controller Gauge, which will be superseded to the gauge in August, 2014. The 4.9 LSU sensor features the same fuel compatibility as the 4.2 LSU and NEVER requires free-air calibration when used with AEM's Wideband UEGO AFR Gauge. The 4.9 LSU sensor uses a different connector than the connector used with the 4.2 LSU sensors included with the original 30-4100 gauge controller. The sensors are not interchangeable between the two gauge controllers in any way, including changing connectors on the gauges. The Wideband O2 air/fuel ratio UEGO gauge is a must if you want to maximize your engine's power and safety. When tuning an engine, accurate air/fuel ratio data is critical because running with too rich of an AFR can cause a loss of power, and running a lean AFR can result in serious engine damage. AEM's digital Wideband AFR UEGO gauge can quickly alert you to even a .1 change in air/fuel ratio and provide enough time to shut down an engine before damage occurs. There are two harnesses that connect to the back of the AEM UEGO gauge. The longer harness connects to the UEGO sensor. The shorter harness contains four leads.

## Features

- Interchangeable black and white faceplates included for customizing gauge appearance.Material:Plastic
- Bosch 4.9 LSU 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 pods and can be remotely mounted virtually anywhere
- Interchangeable black and silver bezels included. 52mm (2-1/16”) gauge housing
- 0-5V analog output 10-20 AFR range only

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | AEM |
| Material | Plastic |
| Item dimensions L x W x H | 2.17 x 2.76 x 2.17 inches |
| Item Weight | 1.4 Pounds |
| UPC | 840879023157 |
| Global Trade Identification Number | 00840879023157 |
| Manufacturer | AEM |
| Product Dimensions | 2.17 x 2.76 x 2.17 inches |
| Item Weight | 1.39 pounds |
| Department | Unisex-Adult |
| ASIN | B00N3VGPYS |
| Item model number | 30-4110 |
| Is Discontinued By Manufacturer | No |
| Date First Available | August 21, 2014 |

## Product Details

- **Brand:** AEM
- **Material:** Plastic
- **Item dimensions L x W x H:** 2.17 x 2.76 x 2.17 inches
- **Item Weight:** 1.4 Pounds
- **UPC:** 840879023157

## Images

![AEM (30-4110) UEGO Air/Fuel Ratio Gauge - Image 1](https://m.media-amazon.com/images/I/61QYe7VgrjL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: I ordered this and it did not come with a bosch sensor, the generic it came with worked for about 45mins. is the seller responsible for this?**
A: Same thing here. I had to return two of them before I finally got them to agree to send a bosch sensor. Easiest is to get a bosch sensor separately at your FLAPS.  Bosch 17025 is what I finally got from AEM and now I have a spare.

**Q: How far away (or close  by) from the exhaust manifold should the O2 sensor be put?**
A: Turbo cars should have the sensor mounted further downstream because of the higher exhaust gas temps, 2-3 ft is ideal, before the catalyst.

**Q: can this work in the tailpipe**
A: That's a poor place to have the O2 sensor. Usually,they would be installed after 18 or so inches from the exhaust manifold. Your application May differ depending on the location and number or cats, depending if you have a pre cat or not, and other factors

**Q: Will this work on a diesel?**
A: I have not tried it. The unit instructions says it will work with gas, diesel, alcohol and more with a selectable setting for each. It has fairly good instructions and I found setup was easy. The wire used to hook it up is quite long and may work for conventional cabs, might be a short for a tip cab.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great wideband, great gauge, easy install
*by J***L on July 24, 2017*

Entirely outstanding in terms of price and performance. This much value for 150 dollars is amazing compared to what you got for your money 15-20 years ago. Back then you paid more and didn't even get a gauge let alone a good one with an easy install.The gauge is easy to read, responds quickly and looks pretty. It doesn't flicker or anything so I don't know why people complain about distracting flashing lights. The brightness seems just right for every situation so far and you don't notice it unless you glance over to the windshield pillar- maybe it's annoying with gauge cluster mounting or with internal LED lighting or something. Dunno. Everyone's car is different. But I had no problems in my NA miata, even in bright sunlight with the top down.Installation was straightforward and easy except for the firewall routing. If you have an easy passage through your firewall and 12v/GRND/signal wires already set aside, this is under a 5 minute install. I had the thing up and running in about 2 minutes... then 2 hours later I had it installed in my dashboard. The extra two hours was entirely devoted to firewall/dashboard cable routing. Getting the rectangular cable connectors fed through the firewall was annoying but that's the worst of it. With practice I could probably get it down to 15-20 minutes.The gauge feels a bit fliimsy compared to autometer (which feel like they're made from metal or something), but you won't ever touch it once installed, so this is a minor quibble.

### ⭐⭐⭐⭐⭐ Great affordable A/F gauge.
*by B***A on September 2, 2015*

Before I bought this gauge, I tried to save some money by purchasing a cheap eBay APSX wideband. That was a mistake, the wiring was cheap, the connector was junk, it didn't work right off the start, and was broken after a week.This gauge is phenomenal. The wiring is all thicker gauge (I think 18?) which was bigger than the cheap one I got.The sweeping LEDs work great and look very smooth while driving.The LED numbers are very easy to read and show up nicely under any lighting conditions.The ONLY complaint I have is that when you are off the throttle and the A/F ratio is 19 or so, it just reads "--" and I wish it would say 19. It's not an issue of any kind and it doesn't do it any other time than when you see coasting off the throttle.Overall this is a great gauge and I would absolutely reccomenend spending the extra 30$ to but this instead of the cheap eBay one.

### ⭐ You'll get maybe 6 months but probably not.
*by M***N on April 1, 2023*

It works and it preforms very well, it's very responsive to sudden changes. A lot of the instillation and preformance depends on the vehicle but the power wiring pigtail could be another foot longer and the sensor lead itself is plenty long for my installation.You will need to know basic wiring and have a second bung welded into your exhaust in the correct spot. The "P4" setting is terrible, do not buy it for this purpose. It's not emulated well at all actually just makes my miata (1994 1.8L) run deathly lean, almost like the stock ecu isn't reading the signal correctly (wiring was verified through factory wiring diagrams). I ended up buying a new narrowband and welding in the provided bung after already cutting into the wiring.The setting switch is deeply recessed into the device and the retention tab actually blocks access to it. The two wiring pigtail connections and placed too close and the cutout for them is not big enough, they both just barely fit in and you have to wiggle with it a little to even get both to get into place. It works as it is but it's not ideal.After a few months and one return/replacement later because of a faulty bosch sensor and some weird troubleshooting, it's had no issues since and I've placed about 2500 miles on it with quick readings, and no sun glare even with the top down and shining on it.Update 12/10: I have since moved to standalone and don’t need the narrowband emulation feature anymore. Unfortunately after 4000 miles the sensor again has died and reads full lean, it also fails the brake clean test miserably with no response even when soaked. Will be contacting seller for a potential replacement sensor.

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-15*