---
product_id: 16387739
title: "Oxygen (O2) Sensor - 234-4445 (Fits Select Years of Subaru: Forester/Impreza/Legacy/Outback and Saab 9-2X Vehicles)"
brand: "denso"
price: "3855093₫"
currency: VND
in_stock: true
reviews_count: 13
category: "Denso"
url: https://www.desertcart.vn/products/16387739-oxygen-o2-sensor-234-4445-fits-select-years-of-subaru
store_origin: VN
region: Vietnam
---

# Boosts fuel efficiency 800°C heat resistance Precision OE fit Oxygen (O2) Sensor - 234-4445 (Fits Select Years of Subaru: Forester/Impreza/Legacy/Outback and Saab 9-2X Vehicles)

**Brand:** denso
**Price:** 3855093₫
**Availability:** ✅ In Stock

## Summary

> ⚡ Upgrade your ride with precision sensing—because your engine deserves the best!

## Quick Answers

- **What is this?** Oxygen (O2) Sensor - 234-4445 (Fits Select Years of Subaru: Forester/Impreza/Legacy/Outback and Saab 9-2X Vehicles) by denso
- **How much does it cost?** 3855093₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/16387739-oxygen-o2-sensor-234-4445-fits-select-years-of-subaru)

## Best For

- denso enthusiasts

## Why This Product

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

## Key Features

- • **Trusted OE Quality:** Denso’s rigorous testing ensures first-time fit and lasting performance.
- • **Durability Under Fire:** Withstands extreme temps up to 800°C for reliable performance mile after mile.
- • **Silicone & Lead Shield:** Exclusive aluminum oxide trap protects sensor longevity and engine health.
- • **Fuel Efficiency Booster:** Optimizes air-fuel mix for smoother rides and fewer pit stops at the pump.
- • **Engineered for Exact Fit:** Seamless replacement for select Subaru & Saab models—no guesswork, no hassle.

## Overview

The Denso 234-4445 Oxygen Sensor is a vehicle-specific replacement part designed for select Subaru Forester, Impreza, Legacy, Outback, and Saab 9-2X models (2006-2012). Built to OE standards with a unique aluminum oxide trap, it protects against sensor poisoning, enhances fuel efficiency, and endures temperatures up to 800°C. This sensor guarantees a perfect first-time fit, restoring engine performance and reliability.

## Description

Denso part number 234-4445 is a replacement oxygen (O2) sensor for 2006-2010 Subaru Forester, 2006-2011 Subaru Impreza, 2006-2012 Subaru Legacy, 2006-2012 Subaru Outback and 2006 Saab 9-2X vehicles.Denso Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled performance. Each component is precision built for exact replacement, and a first time fit. This innovative line features Denso's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead poisoning for improved engine performance, greater fuel efficiency, and unparalleled longevity. Denso gives you the right part and the right fit, the first time.

Review: Exactly like the original and worked perfect. - Fit my 2009 Forester non turbo perfectly. The length was exactly like the original and even had the original style lead clip.
Review: Fits 2007 Subaru Outback 2.5I non-turbo - Perfect fit!! Easy to install once old one is removed. Special removal tool is helpful.... I used the "Aoerzn Premium Offset Oxygen Sensor Socket, 3/8-Inch Drive, 7/8-Inch (22mm)". Worked great. Came with original Denso box (see pic) and enough copper anti-seize to do 3-4 sensors. This is the EXACT part you would get from AutoZone. I know because I bought one there too because desertcart was super late in delivering and I needed to get it done. Our car was throwing a P0031 code. I replaced BOTH sensors (which is recommended). Other sensor was a 234-9123. Soooo glad I replaced both because the car is more zippy now. Note: Be careful removing the old sensor. If it won't budge, the pipe may needed to be heated to a cherry red with a torch. PS... If you find this comment helpful, please hit the "helpful" icon. Thx! 🙂

## Features

- Package Dimensions: 5.75 L x 2 H x 2 W (inches)
- Package Weight : 0.4 pounds
- Country of Origin : China
- Fit type: Vehicle Specific

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001F7CFPU |
| Best Sellers Rank | #111,941 in Automotive ( See Top 100 in Automotive ) #353 in Automotive Replacement Oxygen Sensors |
| Brand | Denso |
| Customer Reviews | 4.6 4.6 out of 5 stars (490) |
| Date First Available | January 2, 2007 |
| Exterior | Machined |
| Global Trade Identification Number | 00042511114616 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 4 ounces |
| Item dimensions L x W x H | 5.75 x 2.19 x 1.88 inches |
| Item model number | 234-4445 |
| Manufacturer | Denso |
| Manufacturer Part Number | 234-4445 |
| Material | Stainless Steel, Zirconium |
| Model | Oxygen Sensor |
| Mounting Type | Thread-In |
| Output Type | NPN |
| Product Dimensions | 5.75 x 2.19 x 1.88 inches |
| Specific Uses For Product | Replacement Oxygen (O2) Sensor |
| Style | Replacement Part |
| UPC | 042511114616 |
| Upper Temperature Rating | 800 Degrees Celsius |

## Product Details

- **Brand:** Denso
- **Item Weight:** 4 ounces
- **Item dimensions L x W x H:** 5.75 x 2.19 x 1.88 inches
- **Material:** Stainless Steel, Zirconium
- **Style:** Replacement Part

## Images

![Oxygen (O2) Sensor - 234-4445 (Fits Select Years of Subaru: Forester/Impreza/Legacy/Outback and Saab 9-2X Vehicles) - Image 1](https://m.media-amazon.com/images/I/51ja7chTBIL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Exactly like the original and worked perfect.
*by G***N on July 13, 2025*

Fit my 2009 Forester non turbo perfectly. The length was exactly like the original and even had the original style lead clip.

### ⭐⭐⭐⭐⭐ Fits 2007 Subaru Outback 2.5I non-turbo
*by D***E on August 10, 2021*

Perfect fit!! Easy to install once old one is removed. Special removal tool is helpful.... I used the "Aoerzn Premium Offset Oxygen Sensor Socket, 3/8-Inch Drive, 7/8-Inch (22mm)". Worked great. Came with original Denso box (see pic) and enough copper anti-seize to do 3-4 sensors. This is the EXACT part you would get from AutoZone. I know because I bought one there too because Amazon was super late in delivering and I needed to get it done. Our car was throwing a P0031 code. I replaced BOTH sensors (which is recommended). Other sensor was a 234-9123. Soooo glad I replaced both because the car is more zippy now. Note: Be careful removing the old sensor. If it won't budge, the pipe may needed to be heated to a cherry red with a torch. PS... If you find this comment helpful, please hit the "helpful" icon. Thx! 🙂

### ⭐⭐⭐⭐⭐ Worked great on my EJ253!
*by A***R on November 12, 2024*

I own a 2008 5MT Outback with over 200k. The car has been fantastic. For the last couple years I've been getting a random "Catalyzer below threshold" code. I thought it was time to replace the cat converter (not surprising giving the miles). But I decided to try the anti fouler bung on the O2 sensor. It worked for a while, but my check engine light kept coming back while in the highway, disabling my cruise control (some "lean condition" code. On these Subarus, and many newer cars, the downstream sensor (after the converter), is not only to check the efficiency of the converter but also has something to do with the fuel trim). I finally decided to replace both O2 sensors (the car well deserves new sensors after all these years), and sure enough, the check engine light has not returned, engine runs smoother, and I should expect some improvement in the fuel mileage. So, if you're on the same boat, replacing both O2 sensors quite probably will do the trick, and it's way cheaper than the catalytic converter. One last thing....as many people before me pointed out...don't use cheaper sensors. These Denso ones are OEM, and work fine.

## Frequently Bought Together

- Denso 234-4445 Oxygen Sensor
- Denso 234-9123 Oxygen Sensor (Air And Fuel Ratio Sensor), Regular (2349123)
- Denso 234-9097 Air Fuel Sensor

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-02*