---
product_id: 29263105
title: "Replacement Oxygen Sensor Compatible with MSA Altair 4"
brand: "alphasense"
price: "€ 3.39"
currency: EUR
in_stock: false
url: https://www.desertcart.pt/products/29263105-replacement-oxygen-sensor-compatible-with-msa-altair-4
store_origin: PT
region: Portugal
---

# Current Month Spec MSA Equivalent PN 2-Year Warranty Replacement Oxygen Sensor Compatible with MSA Altair 4

**Brand:** alphasense
**Price:** € 3.39
**Availability:** ❌ Out of Stock

## Summary

> Breathe Easy with Confidence! 🌬️

## Quick Answers

- **What is this?** Replacement Oxygen Sensor Compatible with MSA Altair 4 by alphasense
- **How much does it cost?** € 3.39 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/29263105-replacement-oxygen-sensor-compatible-with-msa-altair-4)

## Best For

- alphasense enthusiasts

## Why This Product

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

## Key Features

- • **Peace of Mind:** Enjoy a 2-year seller replacement warranty for worry-free usage.
- • **Trusted Quality:** Produced by Alphasense, a leader in gas sensor technology.
- • **Timely Replacement:** Manufactured within the last month for optimal functionality.
- • **Precision Performance:** Engineered to meet MSA Altair 4 specifications for reliable gas detection.
- • **Compatibility Guaranteed:** Directly compatible with MSA Altair 4, ensuring seamless integration.

## Overview

This Replacement Oxygen Sensor is specifically designed for the MSA Altair 4 gas detector, ensuring compliance with the latest specifications. Manufactured by Alphasense, it comes with a 2-year seller replacement warranty and is guaranteed to be from the current month or the previous month, providing you with the reliability and performance you need for safe operations.

## Description

Replacement Oxygen (O2) sensor for the MSA Altair 4. Sensor is a compatible version and is produced by Alphasense, the same company that produces OEM sensors. MSA Equivalent PN: 10089163 MSA Genuine Parts Statement: This product has no affiliation with MSA resale products. The use of non-genuine MSA replacement components or incorrect installation of components will void your MSA device warranty, can seriously impair performance or alter intrinsic safety characteristics of the ALTAIR gas detector, void agency approvals, and can result in serious personal injury or death.  MSA and ALTAIR are registered trademarks of MSA Technology, LLC and are used for informational purposes only.

## Features

- Meets specs for the MSA Altair 4 gas detector
- Sensor Manufacturer Date Code Current Month or -1 Month. Last 3 of SN: MMY
- 2 Year Seller Replacement Warranty
- MSA Equivalent PN: 10089163

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Alphasense |
| Item model number | O2-A2 |
| Is Discontinued By Manufacturer | No |

## Images

![Replacement Oxygen Sensor Compatible with MSA Altair 4 - Image 1](https://m.media-amazon.com/images/I/21HGoNOwu4L.jpg)
![Replacement Oxygen Sensor Compatible with MSA Altair 4 - Image 2](https://m.media-amazon.com/images/I/61qg+qW4EDL.jpg)

## Questions & Answers

**Q: Compatable with altair 4x???**
A: Unfortunately it isn't. They switched the sensor design when they went to the XCell line of sensing technology.

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**Shop now:** [https://www.desertcart.pt/products/29263105-replacement-oxygen-sensor-compatible-with-msa-altair-4](https://www.desertcart.pt/products/29263105-replacement-oxygen-sensor-compatible-with-msa-altair-4)

---

*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-05-16*