---
product_id: 646983072
title: "Geloo 30-0300 Wideband UEGO Air Fuel Ratio Gauge Digital AFR Controller"
brand: "geloo"
price: "$161.51"
currency: USD
in_stock: true
category: "Geloo"
url: https://www.desertcart.us/products/646983072-geloo-30-0300-wideband-uego-air-fuel-ratio-gauge-digital
store_origin: US
region: United States of America
---

# 0-5V & RS232 outputs for data logging 52mm universal gauge size Fast, precise AFR readings in hundredths of a second Geloo 30-0300 Wideband UEGO Air Fuel Ratio Gauge Digital AFR Controller

**Brand:** geloo
**Price:** $161.51
**Availability:** ✅ In Stock

## Summary

> 🔥 Tune smarter, drive faster with precision you can trust! ⚙️

## Quick Answers

- **What is this?** Geloo 30-0300 Wideband UEGO Air Fuel Ratio Gauge Digital AFR Controller by geloo
- **How much does it cost?** $161.51 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/646983072-geloo-30-0300-wideband-uego-air-fuel-ratio-gauge-digital)

## Best For

- geloo enthusiasts

## Why This Product

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

## Key Features

- • **Hassle-Free Setup:** No free air calibration needed when paired with Geloo’s Wideband O2 UEGO gauge, plus clear installation instructions included.
- • **Plug & Play Precision:** Easily mounts in standard 52mm pods with included brackets for a sleek, professional fit.
- • **Seamless System Integration:** Supports 0-5V and RS232 outputs, compatible with most engine management and data logging systems up to 16V.
- • **Rapid, Accurate AFR Feedback:** Displays air-fuel ratio values instantly with high precision, empowering smarter engine tuning decisions.
- • **Durable Build, Trusted Quality:** Crafted from premium materials ensuring reliable performance and longevity under demanding conditions.

## Overview

The Geloo X Series 30-0300 is a 52mm wideband UEGO air-fuel ratio gauge featuring upgraded digital AFR control and LSU sensor kit. It offers fast, accurate readings with 0-5V and RS232 outputs for seamless integration into most engine management systems. Designed for easy installation and reliable performance, it’s the essential tool for professional-grade engine tuning and optimization.

## Description

Buy Geloo 30-0300 Wideband UEGO Air Fuel Ratio Gauge Digital AFR Controller | 52mm (2-1/16") with 4.9 LSU Sensor Kit, With 0-5V and RS232 outputs, Free air or resistor trim calibration modes: Air & Fuel Ratio - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- WIDELY APPLICABLE: The 52 mm (2-1/16 in) wideband gauge housing fits and mounts easily in most instrument pods. With 0-5V and RS232 outputs for data logging and feedback control, it can be used with data loggers and virtually any engine management system. Suitable for vehicle/system voltages up to 16V. Please check compatibility by model number for accurate installation
- TRUSTWORTHY QUALITY: The gauge is constructed from high quality materials and display AFR values in hundredths of a second. The readings are accurate and fast, allowing controllers to take better and faster readings of reported values for further more optimized engine tuning and safer overall operating conditions. Note: Free air calibration is not required when used with our Wideband O2 UEGO AFR gauge
- EASY FOR INSTALLATION: Wideband meters have a 52mm housing and are supplied with brackets and thumbscrews for easy, plug-and-play mounting to panels or gauge pods. It is recommended that the gauges need to be securely mounted with the brackets provided to ensure they do not come loose. Installation instructions are included to assist you with the installation and wiring procedures
- WARM REMINDER: The gauge is not water-proof and should not be installed in a location with exposure to water or snow
- After-Sales SERVICE: We provide 12 months of after-sales service for each product, every products needs to go through strict quality inspection before leaving the factory.If you have any questions about the product, please let us know

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CX8KN3RL |
| Best Sellers Rank | #468,403 in Automotive ( See Top 100 in Automotive ) #31 in Automotive Replacement Air & Fuel Ratio Gauges |
| Brand Name | Geloo |
| Customer Reviews | 2.9 2.9 out of 5 stars (17) |
| Included Components | UEGO Gauge Assembly UEGO Sensor PWR/IO Cable Sensor Cable Nut Instruction |
| Item Dimensions | 5.51 x 5.11 x 4.52 inches |
| Item Weight | 1.3 pounds |
| Manufacturer | Geloo |
| Material Type | Plastic |
| Number of Items | 4 |
| Number of Packs | 1 |
| Part Number | 30-0300 |
| Thread Style | Unc |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Geloo
- **Item Weight:** 1.3 pounds
- **Item dimensions L x W x H:** 5.51 x 5.11 x 4.52 inches
- **Material:** Plastic

## Images

![Geloo 30-0300 Wideband UEGO Air Fuel Ratio Gauge Digital AFR Controller - Image 1](https://m.media-amazon.com/images/I/714ClTZWXfL.jpg)

## Available Options

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

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-10-03*