---
product_id: 123450006
title: "234-9011 Upstream Air Fuel Ratio Sensor O2 Oxygen Sensor for Subaru 2002-2005 Impreza 2.0L-H4 2005 for Saab 9-2X 2.0L-H4 22641-AA042, 2349011, 22641AA042"
brand: "amrxuts"
price: "€ 109.35"
currency: EUR
in_stock: true
reviews_count: 13
category: "Amrxuts"
url: https://www.desertcart.be/products/123450006-234-9011-upstream-air-fuel-ratio-sensor-o2-oxygen-sensor
store_origin: BE
region: Belgium
---

# 4-wire harness, 31.5 in length 1350°F max temp rating 0.711 in thread diameter 234-9011 Upstream Air Fuel Ratio Sensor O2 Oxygen Sensor for Subaru 2002-2005 Impreza 2.0L-H4 2005 for Saab 9-2X 2.0L-H4 22641-AA042, 2349011, 22641AA042

**Brand:** amrxuts
**Price:** € 109.35
**Availability:** ✅ In Stock

## Summary

> 🚗 Upgrade your ride’s brain with precision sensing—because your engine deserves the best!

## Quick Answers

- **What is this?** 234-9011 Upstream Air Fuel Ratio Sensor O2 Oxygen Sensor for Subaru 2002-2005 Impreza 2.0L-H4 2005 for Saab 9-2X 2.0L-H4 22641-AA042, 2349011, 22641AA042 by amrxuts
- **How much does it cost?** € 109.35 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/123450006-234-9011-upstream-air-fuel-ratio-sensor-o2-oxygen-sensor)

## Best For

- amrxuts enthusiasts

## Why This Product

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

## Key Features

- • **Rapid Response Sensor:** Ultra-fast light-off time ensures your engine runs at peak performance instantly.
- • **Engine Health Guardian:** Prevents check engine light errors by accurately monitoring oxygen levels—stay ahead of costly repairs.
- • **Fuel Efficiency Booster:** Optimizes air-fuel ratio for improved mileage and lower emissions—save money and the planet.
- • **Durability You Can Trust:** Built to last longer than standard sensors, backed by a 1-year guarantee for peace of mind.
- • **Precision Fit & Easy Install:** Direct fit for 2002-2005 Subaru Impreza & 2005 Saab 9-2X—no hassle, no guesswork.

## Overview

The 234-9011 Upstream Air Fuel Ratio Sensor is a brand-new, direct-fit oxygen sensor designed for 2002-2005 Subaru Impreza 2.0L H4 and 2005 Saab 9-2X 2.0L H4 models. Featuring a 4-wire harness and a durable design rated up to 1350°F, it ensures rapid and accurate air-fuel mixture readings to optimize engine performance, improve fuel economy, and reduce emissions. Tested for safety and stability, it comes with a 1-year warranty, making it a reliable aftermarket replacement that keeps your check engine light off and your vehicle running smoothly.

## Description

Buy Amrxuts 234-9011 Upstream Air Fuel Ratio Sensor O2 Oxygen Sensor for Subaru 2002-2005 Impreza 2.0L-H4 2005 for Saab 9-2X 2.0L-H4 22641-AA042, 2349011, 22641AA042: Oxygen - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Worked for 04 WRX - A lot of cheap o2’s don’t work for the upstream spot on Subaru. I read some good reviews on this one so I decided to try it. Fits great and works great. Got rid of my Check engine light and got my AFR right. Save yourself 100+ bucks and buy this one.
Review: Non-functional - I tried to save some money over the OEM Denso unit, but after I installed it and the P0171 CEL remained, I had a mechanic test this unit and they determined it was not functioning correctly/putting out a signal. So I now paid for both the Denso and this one. Learn from me and skip this one. Suck it up and buy the OEM Denso.

## Features

- ▶ Features - Fix the engine light issue. Provide extreme durability for long life, improve fuel economy
- ▶ Condition - Brand new aftermarket product, 100% test before shipping to ensure product safety, stability and durability
- ▶ Fitment - for 2002-2005 Su-baru Impreza 2.0L; for 2005 Sa-ab 9-2X 2.0L
- ▶ The Part Number - 234-9011, 2349011, 22641-AA042, 22641-AA090, 22641AA042, 32005978, 22641AA090
- ▶ Direct Fit - Easy installation. ▶ Guarantee -“1 year” guarantee period.If there are quality issues with the product within one year, you can contact us by email to replace it with a new one for you ▶ 234-9011 ▶ Thread Diameter：0.711 IN ▶ Wire Quantity：4 ▶ Wiring Harness Length：31.50 IN

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07CKZ7SXS |
| Best Sellers Rank | #665,216 in Automotive ( See Top 100 in Automotive ) #3,478 in Automotive Replacement Oxygen Sensors |
| Brand | Amrxuts |
| Brand Name | Amrxuts |
| Customer Reviews | 3.7 out of 5 stars 69 Reviews |
| Item Weight | 5.3 ounces |
| Manufacturer | Amrxuts |
| Maximum Supply Voltage | 5 volts |
| Measurement Accuracy | ±1.5% |
| Measuring Range | 12 - 16 (air-fuel ratio) |
| Model | 234-9011 |
| Mounting Type | Flange Mount |
| Number of Items | 1 |
| Number of Packs | 1 |
| Output Type | Push Button |
| Part Number | 234-9011 |
| Specific Uses For Product | Oxygen Sensor |
| Style | Modern |
| Style Name | Modern |
| UPC | 672823541871 |
| Unit Count | 1 Count |
| Upper Temperature Rating | 1350 °F |

## Product Details

- **Brand:** Amrxuts
- **Item Weight:** 5.3 Ounces
- **Maximum Supply Voltage:** 5 Volts
- **Measurement Accuracy:** ±1.5%
- **Measuring Range:** 12 - 16 (air-fuel ratio)

## Images

![234-9011 Upstream Air Fuel Ratio Sensor O2 Oxygen Sensor for Subaru 2002-2005 Impreza 2.0L-H4 2005 for Saab 9-2X 2.0L-H4 22641-AA042, 2349011, 22641AA042 - Image 1](https://m.media-amazon.com/images/I/61YJ5zlTC6L.jpg)
![234-9011 Upstream Air Fuel Ratio Sensor O2 Oxygen Sensor for Subaru 2002-2005 Impreza 2.0L-H4 2005 for Saab 9-2X 2.0L-H4 22641-AA042, 2349011, 22641AA042 - Image 2](https://m.media-amazon.com/images/I/61ftxRhNUzL.jpg)
![234-9011 Upstream Air Fuel Ratio Sensor O2 Oxygen Sensor for Subaru 2002-2005 Impreza 2.0L-H4 2005 for Saab 9-2X 2.0L-H4 22641-AA042, 2349011, 22641AA042 - Image 3](https://m.media-amazon.com/images/I/511DkJtwAOL.jpg)
![234-9011 Upstream Air Fuel Ratio Sensor O2 Oxygen Sensor for Subaru 2002-2005 Impreza 2.0L-H4 2005 for Saab 9-2X 2.0L-H4 22641-AA042, 2349011, 22641AA042 - Image 4](https://m.media-amazon.com/images/I/51rnGdpiICL.jpg)
![234-9011 Upstream Air Fuel Ratio Sensor O2 Oxygen Sensor for Subaru 2002-2005 Impreza 2.0L-H4 2005 for Saab 9-2X 2.0L-H4 22641-AA042, 2349011, 22641AA042 - Image 5](https://m.media-amazon.com/images/I/61QNPdqFCUL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked for 04 WRX
*by M***N on April 8, 2023*

A lot of cheap o2’s don’t work for the upstream spot on Subaru. I read some good reviews on this one so I decided to try it. Fits great and works great. Got rid of my Check engine light and got my AFR right. Save yourself 100+ bucks and buy this one.

### ⭐ Non-functional
*by M***N on May 4, 2023*

I tried to save some money over the OEM Denso unit, but after I installed it and the P0171 CEL remained, I had a mechanic test this unit and they determined it was not functioning correctly/putting out a signal. So I now paid for both the Denso and this one. Learn from me and skip this one. Suck it up and buy the OEM Denso.

### ⭐⭐⭐⭐⭐ Perfect fit, no CEL
*by E***C on April 26, 2021*

Nice replacement for my defective upsteam O2 sensor. Using this in my 02 WRX and it works well. No check engine light, and no codes after using this for a couple weeks. Comes with anti-seize grease on the threads, and the plug fits perfectly with no issues at all. Great replacement product at a fraction of the OEM price.

## Frequently Bought Together

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-11-11*