---
product_id: 59934873
title: "Denso 234-9040 Air Fuel Ratio Sensor"
brand: "denso"
price: "FREE"
currency: GBP
in_stock: false
reviews_count: 5
url: https://www.desertcart.co.uk/products/59934873-denso-234-9040-air-fuel-ratio-sensor
store_origin: GB
region: United Kingdom
---

# Compact 14.99 x 4.83 x 5.59 cm size Lightweight at 90.7 g Zirconia solid electrolyte tech Denso 234-9040 Air Fuel Ratio Sensor

**Brand:** denso
**Price:** FREE
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Tune your ride with precision and power! ⚙️

## Quick Answers

- **What is this?** Denso 234-9040 Air Fuel Ratio Sensor by denso
- **How much does it cost?** FREE with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/59934873-denso-234-9040-air-fuel-ratio-sensor)

## 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 Brand Reliability:** From Denso, a leader in automotive sensor technology trusted by professionals.
- • **Plug-and-Play Installation:** Designed for hassle-free setup, saving you time and effort.
- • **Optimized Engine Efficiency:** Ensures your vehicle runs cleaner and more efficiently, reducing emissions.
- • **Durability Meets Performance:** Constructed from robust materials to withstand harsh engine environments.
- • **Precision Air-Fuel Detection:** Engineered with zirconia solid electrolyte for ultra-accurate exhaust gas readings.

## Overview

The Denso 234-9040 Air Fuel Ratio Sensor features a zirconia solid electrolyte for highly accurate exhaust gas measurement. Compact and lightweight, it offers durable construction and easy installation, making it an essential upgrade for optimizing engine performance and emissions control.

## Description

Denso Air and Fuel Ratio sensor is designed to detect the amount of the exhaust gas air and fuel ratio. It is constructed from durable material that is corrosion and abrasion resistant. This sensor features zirconia solid electrolyte integrated with alumina heater substrate which precicely controls the amount of oxygen concentration that flows into the diffusion layer to limit current flow. This sensor can easily be installed and ensures longevity.

Review: Quality product - 2003 Accord, work great. No issues perfect oem fit.
Review: Good - Good

## Features

- Manufactured to detect the amount of exhaust gas air fuel ratio
- Constructed from durable material
- Features zirconia solid electrolyte
- Highly accurate
- Easy installation

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000PWTIUG |
| Brand | Denso |
| Customer Reviews | 4.6 out of 5 stars 462 Reviews |
| Global Trade Identification Number | 00042511112643 |
| Included Components | OXYGEN SENSOR |
| Item Dimensions | 14.6 x 5.6 x 4.8 centimetres |
| Item Type Name | ACCESSORIES |
| Item Weight | 0.2 Pounds |
| Item dimensions L x W x H | 14.6 x 5.6 x 4.8 centimetres |
| Item weight | 0.2 Pounds |
| Manufacturer | Denso |
| Manufacturer Part Number | 234-9040 |
| Material | Alumina |
| Measurement Accuracy | High |
| Measurement accuracy | High |
| Measuring Range | 10:1 - 20:1 |
| Model Number | 234-9040 |
| Mounting Type | Flange Mount |
| Output Type | Push-Pull |
| Specific Uses For Product | automotive |
| Style | Modern |
| Style Name | Modern |
| UPC | 042511112643 |

## Product Details

- **Brand:** Denso
- **Item dimensions L x W x H:** 15 x 4.8 x 5.6 centimetres
- **Material:** Alumina
- **Item weight:** 91 g
- **Style:** Modern

## Images

![Denso 234-9040 Air Fuel Ratio Sensor - Image 1](https://m.media-amazon.com/images/I/61ZfCo9ZUlL.jpg)
![Denso 234-9040 Air Fuel Ratio Sensor - Image 2](https://m.media-amazon.com/images/I/617BA3fnOeL.jpg)
![Denso 234-9040 Air Fuel Ratio Sensor - Image 3](https://m.media-amazon.com/images/I/31FuHx9Ne+L.jpg)
![Denso 234-9040 Air Fuel Ratio Sensor - Image 4](https://m.media-amazon.com/images/I/61ZaOlze2yL.jpg)
![Denso 234-9040 Air Fuel Ratio Sensor - Image 5](https://m.media-amazon.com/images/I/51+4IUylILL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality product
*by J***N on 5 November 2025*

2003 Accord, work great. No issues perfect oem fit.

### ⭐⭐⭐⭐⭐ Good
*by S***S on 2 August 2024*

Good

### ⭐⭐⭐⭐⭐ Own works like a charm . Honda 2.4
*by R***S on 7 April 2023*

Perfect ND stock quality sensor , upstream B1S1 . No more light. Perfect lone honda dealer . It’s ND original too . Perfect clips , threads and stainless steel quality , as to be expected . Forget made in China others .

## Frequently Bought Together

- Denso 234-9040 Air Fuel Ratio Sensor
- Denso 234-4797 Oxygen Sensor
- Offset Oxygen Sensor Socket, 3/8-Inch Drive, 7/8-Inch (22mm), Wire Gate Accesses Sensor from Side, Preventing Damage to Wires, Universal for Most Cars

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**Shop now:** [https://www.desertcart.co.uk/products/59934873-denso-234-9040-air-fuel-ratio-sensor](https://www.desertcart.co.uk/products/59934873-denso-234-9040-air-fuel-ratio-sensor)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-26*