---
product_id: 8470664
title: "4379 Ultra-Lite Wide Band Air Fuel Ratio Kit,2.3125 in."
brand: "auto meter"
price: "¥74822"
currency: JPY
in_stock: true
reviews_count: 13
category: "Auto Meter"
url: https://www.desertcart.jp/products/8470664-4379-ultra-lite-wide-band-air-fuel-ratio-kit-2
store_origin: JP
region: Japan
---

# 0.1 AFR resolution precision 0-4V data output for ECU & tuning 304 stainless steel weld-in bung 4379 Ultra-Lite Wide Band Air Fuel Ratio Kit,2.3125 in.

**Brand:** auto meter
**Price:** ¥74822
**Availability:** ✅ In Stock

## Summary

> 🔥 Tune smarter, race harder — never miss the perfect AFR again!

## Quick Answers

- **What is this?** 4379 Ultra-Lite Wide Band Air Fuel Ratio Kit,2.3125 in. by auto meter
- **How much does it cost?** ¥74822 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/8470664-4379-ultra-lite-wide-band-air-fuel-ratio-kit-2)

## Best For

- auto meter enthusiasts

## Why This Product

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

## Key Features

- • **Dynamic Visual Feedback:** Digital segment display paired with LED radial bar graph ensures instant, easy-to-read AFR monitoring.
- • **Universal Compatibility:** Works flawlessly with 12V and 16V systems, fitting nearly every street or race car electrical setup.
- • **Plug & Play Installation:** Complete kit with 8ft wiring harness, stainless steel weld-in bung, and mounting hardware for hassle-free setup.
- • **Seamless Data Integration:** 0-4V linear output feeds directly to your ECU, data logger, or laptop for real-time performance insights.
- • **Precision Tuning at Your Fingertips:** Custom-tuned Bosch LSU4.2 sensor delivers ultra-accurate 0.1 AFR resolution for flawless fuel management.

## Overview

The Auto Meter 4379 Ultra-Lite Wide Band Air Fuel Ratio Kit is a precision gauge system designed for gasoline engines, featuring a custom-tuned Bosch LSU4.2 sensor with 0.1 AFR resolution, a durable stainless steel weld-in bung, and an 8ft wiring harness. It offers 0-4V data output compatible with ECUs and data loggers, a clear digital and LED display, and supports both 12V and 16V electrical systems, making it ideal for street and race car tuning with effortless installation and reliable accuracy.

## Description

Taking the core features from AutoMeter&rsquos Pro Wideband, the Street Wideband provides the most important functions necessary to make sure you&rsquore extracting the most power possible, safely. Our advanced auto calibration system automatically calibrates your gauge on every startup to assure you of the highest degree of accuracy over the entire lifespan of your sensor (no free air calibration is ever necessary). Designed for gasoline applications, this wideband gauge provides the same degree of accuracy and response as the Pro version, but at a reduced cost. Data logging output is included for one wire or two wire systems. Our specially designed O2 sensor and wiring harness are included for ease of installation. Feature Points Gauge kit includes custom tuned .1 AFR Resolution Bosch LSU4.2 Sensor, 8ft. wiring harness, 304 stainless steel weld-in bung, mounting hardware, and detailed instructions for installation 0-4v data output feed for ECU, data acquisition unit, or Laptop tuning Suitable for use with gasoline powered engines Digital segment display and LED radial bar graph display 12 and 16 volt compatible, compatible with nearly every street car or race car electrical system

Review: Helpful for monitoring your fuel ratio while tuning your car. - I've had the gauge for a while now and still working as expected. Great for helping with tuning your motor or if your running boost or nitrous. It also has two wires that provide 4V linear output to use on your ecu or data logging port.
Review: Perfect replacement for aem wideband. - Exactly what I needed to replace my aem wideband on a 04 twin turbo cobra. All lights look amazing and gauge is very responsive. Easy to read. Cheaper than buying anywhere else.

## Features

- Gauge kit includes custom tuned .1 AFR Resolution Bosch LSU4.2 Sensor, 8ft. wiring harness, 304 stainless steel weld-in bung, mounting hardware, and detailed instructions for installation
- 0-4v data output feed for ECU, data acquisition unit, or Laptop tuning
- Suitable for use with gasoline powered engines
- Digital segment display and LED radial bar graph display
- 12 and 16 volt compatible, compatible with nearly every street car or race car electrical system

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003JZL0ES |
| Best Sellers Rank | #708,238 in Automotive ( See Top 100 in Automotive ) #48 in Automotive Replacement Air & Fuel Ratio Gauges |
| Brand | AUTO METER |
| Bulb Type | Digital LED |
| Customer Reviews | 4.6 4.6 out of 5 stars (216) |
| Date First Available | March 29, 2010 |
| Exterior | Painted |
| Global Trade Identification Number | 00046074043796 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.08 pounds |
| Item dimensions L x W x H | 3.94 x 3.94 x 3.94 inches |
| Item model number | 4379 |
| Manufacturer | Auto Meter |
| Manufacturer Part Number | 4379 |
| Material | Plastic |
| Model | Auto Meter 4379 Ultra-Lite Wide Band Air Fuel Ratio Kit,2.3125 in. |
| OEM Part Number | 4379 |
| Product Dimensions | 3.94 x 3.94 x 3.94 inches |
| UPC | 046074043796 |

## Product Details

- **Brand:** AUTO METER
- **Item Weight:** 1.08 Pounds
- **Item dimensions L x W x H:** 3.94 x 3.94 x 3.94 inches
- **Material:** Plastic
- **UPC:** 046074043796

## Images

![4379 Ultra-Lite Wide Band Air Fuel Ratio Kit,2.3125 in. - Image 1](https://m.media-amazon.com/images/I/81GT7pAumQL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Helpful for monitoring your fuel ratio while tuning your car.
*by F***5 on October 27, 2024*

I've had the gauge for a while now and still working as expected. Great for helping with tuning your motor or if your running boost or nitrous. It also has two wires that provide 4V linear output to use on your ecu or data logging port.

### ⭐⭐⭐⭐⭐ Perfect replacement for aem wideband.
*by J***Y on October 15, 2025*

Exactly what I needed to replace my aem wideband on a 04 twin turbo cobra. All lights look amazing and gauge is very responsive. Easy to read. Cheaper than buying anywhere else.

### ⭐⭐⭐⭐⭐ Buy it and have your own carburetor school while you drive.
*by R***N on November 8, 2021*

Works great on my 200 Ford six with a Carter BBD 2 Barrel. I was able to adjust the step up piston travel at WOT. I also reduced the size of the transition circuit slots with JB weld to a correct Idling best with the mixture screws all the way in problem. This also corrected it not going lean on deceleration. With this meter you will have your own carburetor school while you drive. With the money saved buying on Amazon I bought the AUTO METER 2204 Mounting Cup and mounted the AF meter on the steering column of my 1963 Falcon wagon. I used a steel Walker O2 sensor bung from Oreilly Auto parts instead of the supplied stainless bung.

## Frequently Bought Together

- Auto Meter 4379 Ultra-Lite Wide Band Air Fuel Ratio Kit,2.3125 in.
- Auto Meter 2204 Mounting Cup
- Auto Meter 4303 Ultra-Lite Mechanical Boost/Vacuum Gauge, 2.3125 in.

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**Shop now:** [https://www.desertcart.jp/products/8470664-4379-ultra-lite-wide-band-air-fuel-ratio-kit-2](https://www.desertcart.jp/products/8470664-4379-ultra-lite-wide-band-air-fuel-ratio-kit-2)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-23*