---
product_id: 23493080
title: "AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge"
brand: "aem"
price: "53111 kr"
currency: ISK
in_stock: true
reviews_count: 13
category: "Aem"
url: https://www.desertcart.is/products/23493080-aem-30-0300-x-series-wideband-uego-afr-sensor-controller
store_origin: IS
region: Iceland
---

# fastest response time 87% larger display multi-output data logging AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge

**Brand:** aem
**Price:** 53111 kr
**Availability:** ✅ In Stock

## Summary

> ⚙️ Tune smarter, drive safer — the ultimate AFR gauge for the discerning pro.

## Quick Answers

- **What is this?** AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge by aem
- **How much does it cost?** 53111 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/23493080-aem-30-0300-x-series-wideband-uego-afr-sensor-controller)

## 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

- • **Massive 87% Larger Display:** See your AFR data with unmatched clarity on a sleek, modern faceplate that commands attention.
- • **Lightning-Fast X-Digital Tech:** Experience the fastest wideband AFR response for precision tuning and safer engine performance.
- • **Optimized Engine Tuning Made Easy:** Advanced sensor readings deliver data others can’t, unlocking peak power and reliability.
- • **Versatile Multi-Output Connectivity:** 0-5V, RS232, and CANbus outputs ensure seamless integration with your data logging and feedback systems.
- • **Trusted by Pros, Loved by Enthusiasts:** Top-ranked gauge with 4.6 stars and thousands of users who swear by its accuracy and ease of install.

## Overview

The AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge features an 87% larger seven-segment display, patented X-Digital technology for the fastest response times, and multiple output options (0-5V, RS232, CANbus) for advanced data logging and feedback control. Designed for precision engine tuning, it delivers more accurate air/fuel ratio readings to optimize performance and safety, making it a top choice among automotive professionals and enthusiasts alike.

## Description

AEM's X-Series wideband UEGO Air/Fuel ratio sensor controller gauges are built upon unique, patent-pending X-Digital technology that makes them the fastest responding wideband air/fuel ratio controllers in independent testing against 17 other wideband UEGO air/fuel controllers.

Review: It’s the real deal 👍🏼 - I’m writing this for people on the fence about whether it is the real AEM gauge/sensor or not. It is, I went to AEM’s website and compared the part numbers and pics and it is exactly the same. I installed it per instructions and warnings and it is working perfectly. It’s a good deal and a great product.
Review: Good guage - Easy installation and a great tool getting my motor tuned

## Features

- The X-Series wideband UEGO AFR sensor controller gauge (PN 30-0300) features a modern, visually striking faceplate and new seven-segment, center display that is 87% larger than the 30-4110 AEM
- The gauge includes a 0-5v and RS232 Serial Port output for feedback control and data logging, and an AEMnet (CANbus) output for data logging
- X-Digital wideband technology gives these controllers the ability to read and report values that other controllers do not, which can deliver more optimized engine tuning and a safer overall operating condition
- Faster response time improves wideband feedback control, and can provide a safer, more powerful and accurate tune
- When tuning an engine using wideband AFR feedback control on an inertia dyno, dead time affects the data you are looking at because it is reported in a different operating location than when it actually occurred

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0184TSI84 |
| Best Sellers Rank | #13,511 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Replacement Air & Fuel Ratio Gauges |
| Brand | AEM |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,085) |
| Date First Available | November 18, 2015 |
| Exterior | Machined |
| Global Trade Identification Number | 00840879024437 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.01 ounces |
| Item model number | 30-0300 |
| Manufacturer | AEM |
| Manufacturer Part Number | 30-0300 |
| Material | Plastic |
| Model | 30-0300 |
| OEM Part Number | 30-0300 |
| UPC | 840879024437 |

## Product Details

- **Brand:** AEM
- **Global Trade Identification Number:** 00840879024437
- **Item Weight:** 0.01 Ounces
- **Material:** Plastic
- **UPC:** 840879024437

## Images

![AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge - Image 1](https://m.media-amazon.com/images/I/612s0KKTP+L.jpg)
![AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge - Image 2](https://m.media-amazon.com/images/I/618kdL8lBHL.jpg)
![AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge - Image 3](https://m.media-amazon.com/images/I/61CPBw7zlgL.jpg)
![AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge - Image 4](https://m.media-amazon.com/images/I/61DQZ4aDwIL.jpg)
![AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge - Image 5](https://m.media-amazon.com/images/I/61NZ-5-mnOL.jpg)

## Questions & Answers

**Q: Is it compatible with standard hp tuners vcm scanner for data logging?**
A: Yes

**Q: do I need 30-0310 also or is this complete?**
A: No need, the aem 30-0300 is a complete kit. The controller is in the gauge itself.

**Q: Does this come with a bosch 4.9 lsu?**
A: yes

**Q: How do you mount this? Do i have to buy a seperate mounting device?**
A: HelloWe usually mount it with this gauge pod Autometer 2204 or same oneIt sells separate https://www.amazon.com/Auto-Meter-2204-Mounting-Cup/dp/B0009RUXPG/ref=sr_1_2?ie=UTF8&qid=1491381219&sr=8-2&keywords=2204

## Customer Reviews

### ⭐⭐⭐⭐⭐ It’s the real deal 👍🏼
*by W***. on November 6, 2025*

I’m writing this for people on the fence about whether it is the real AEM gauge/sensor or not. It is, I went to AEM’s website and compared the part numbers and pics and it is exactly the same. I installed it per instructions and warnings and it is working perfectly. It’s a good deal and a great product.

### ⭐⭐⭐⭐⭐ Good guage
*by A***N on November 2, 2025*

Easy installation and a great tool getting my motor tuned

### ⭐⭐⭐⭐⭐ Great product
*by J***N on December 15, 2025*

Works exactly as it should.

## Frequently Bought Together

- AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge
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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-01-22*