---
product_id: 350243371
title: "Denso 234-4509 Heated 4-Wire Oxygen Sensor with 25.5” Harness for 2004-2016 Lexus/Toyota V6 Right-Bank Downstream"
brand: "denso"
price: "A$190"
currency: AUD
in_stock: true
reviews_count: 5
category: "Denso"
url: https://www.desertcart.com.au/products/350243371-denso-234-4509-heated-4-wire-oxygen-sensor-with-25
store_origin: AU
region: Australia
---

# Optimizes fuel efficiency Heated 4-wire tech Universal fit, easy install Denso 234-4509 Heated 4-Wire Oxygen Sensor with 25.5” Harness for 2004-2016 Lexus/Toyota V6 Right-Bank Downstream

**Brand:** denso
**Price:** A$190
**Availability:** ✅ In Stock

## Summary

> 🔥 Upgrade your ride’s brain with precision oxygen sensing!

## Quick Answers

- **What is this?** Denso 234-4509 Heated 4-Wire Oxygen Sensor with 25.5” Harness for 2004-2016 Lexus/Toyota V6 Right-Bank Downstream by denso
- **How much does it cost?** A$190 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/350243371-denso-234-4509-heated-4-wire-oxygen-sensor-with-25)

## 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

- • **Advanced Heated Sensor:** 4-wire design ensures rapid warm-up and accurate oxygen detection under all conditions.
- • **Fuel Efficiency Booster:** Optimizes air-fuel mixture to enhance mileage and reduce emissions.
- • **Plug & Play Installation:** Comes with 25.5” harness and anti-seize compound for hassle-free replacement.
- • **Durable Premium Materials:** Constructed with stainless steel, platinum, and ceramics for long-lasting performance.
- • **Precision OE Standard Fit:** Engineered to match original equipment specs for seamless integration.

## Overview

The Denso 234-4509 Heated 4-Wire Oxygen Sensor is a high-quality, universal-fit downstream sensor designed for 2004-2016 Lexus/Toyota V6 right-bank engines. Built with premium materials and advanced heating technology, it ensures accurate oxygen level detection to optimize fuel efficiency and reduce emissions. Easy to install with a 25.5” harness and anti-seize compound, this sensor meets OE standards for reliable, long-lasting performance.

## Description

Denso Oxygen Sensor is designed to detect the amount of oxygen in the exhaust stream. It is constructed from high quality stainless steel, porous polytetrafluoroethylene, fluorine rubber, aluminum oxide, high-grade platinum and ceramics. This Sensor features double protection layer, aluminum oxide trap layer, porous PTFE filter and stainless steel housing. It is manufactured with precision to meet OE standards. This oxygen sensor can be installed easily and ensures longevity.

Review: Resolved the computer code and Service Engine Light. Pretty easy to replace with just metric ratchet set, metric wrench and mallet. Hardest part was getting the old one off. Tried PB Blaster, but not sure that helped. Tried running the engine for awhile to get it nice and hot (be careful under there when it is hot, easy to get a nasty burn). I think the heat may have helped along with a mallet to pound on the wrench handle. Either that or just persistence. Comes with a bit of anti-seize compound. All the attachment clips fit exactly which is great because these are always a bear to get off without breaking. In this case can just cut and grab without having to try and save them. Highly recommended to fix this sensor code.
Review: This sensor was exact fit for my 2006 Lexus RX330, its been working perfect for several months months now. Definitely recommend.

## Features

- Fit type: Universal Fit
- Efficient Fuel Consumption
- Constructed from high quality material
- Designed to detect the amount of oxygen in the exhaust system

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0018JVJB6 |
| Best Sellers Rank | #113,901 in Automotive ( See Top 100 in Automotive ) #405 in Car Exhaust Oxygen Sensors |
| Brand | Denso |
| Customer Reviews | 4.6 4.6 out of 5 stars (278) |
| Date First Available | 1 January 2024 |
| Exterior | Machined |
| Item Weight | 113 g |
| Item model number | 234-4509 |
| Manufacturer | DENSO |
| Manufacturer Part Number | 234-4509 |
| Model | 234-4509 |
| Product Dimensions | 14.61 x 9.86 x 5.56 cm; 113.4 g |

## Product Details

- **Brand:** Denso
- **Item dimensions L x W x H:** 14.6 x 9.9 x 5.6 centimeters
- **Item weight:** 0.25 Pounds
- **Material:** Zirconium Stainless Steel
- **Style:** Replacement Part

## Images

![Denso 234-4509 Heated 4-Wire Oxygen Sensor with 25.5” Harness for 2004-2016 Lexus/Toyota V6 Right-Bank Downstream - Image 1](https://m.media-amazon.com/images/I/41+X3tX7VOL.jpg)
![Denso 234-4509 Heated 4-Wire Oxygen Sensor with 25.5” Harness for 2004-2016 Lexus/Toyota V6 Right-Bank Downstream - Image 2](https://m.media-amazon.com/images/I/41H06E6W1qL.jpg)
![Denso 234-4509 Heated 4-Wire Oxygen Sensor with 25.5” Harness for 2004-2016 Lexus/Toyota V6 Right-Bank Downstream - Image 3](https://m.media-amazon.com/images/I/517eo0WJ3XL.jpg)
![Denso 234-4509 Heated 4-Wire Oxygen Sensor with 25.5” Harness for 2004-2016 Lexus/Toyota V6 Right-Bank Downstream - Image 4](https://m.media-amazon.com/images/I/51FTNk9M74L.jpg)
![Denso 234-4509 Heated 4-Wire Oxygen Sensor with 25.5” Harness for 2004-2016 Lexus/Toyota V6 Right-Bank Downstream - Image 5](https://m.media-amazon.com/images/I/51XkQSK6SDL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by I***R on 30 September 2017*

Resolved the computer code and Service Engine Light. Pretty easy to replace with just metric ratchet set, metric wrench and mallet. Hardest part was getting the old one off. Tried PB Blaster, but not sure that helped. Tried running the engine for awhile to get it nice and hot (be careful under there when it is hot, easy to get a nasty burn). I think the heat may have helped along with a mallet to pound on the wrench handle. Either that or just persistence. Comes with a bit of anti-seize compound. All the attachment clips fit exactly which is great because these are always a bear to get off without breaking. In this case can just cut and grab without having to try and save them. Highly recommended to fix this sensor code.

### ⭐⭐⭐⭐⭐ Review
*by R***. on 5 January 2023*

This sensor was exact fit for my 2006 Lexus RX330, its been working perfect for several months months now. Definitely recommend.

### ⭐⭐⭐⭐⭐ Review
*by H***G on 25 December 2021*

It came in different Denso Part # on the unit. May be new update from Denso. But it fixed our 2004 Lexus RX330 code P420 Bank 1 (by fire wall side). Don't change the cat converter first, change this first!

## Frequently Bought Together

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-01-31*