---
product_id: 173452342
title: "234-9042 Air Fuel Ratio Sensor"
brand: "denso"
price: "€ 294.64"
currency: EUR
in_stock: true
reviews_count: 5
category: "Denso"
url: https://www.desertcart.sk/products/173452342-234-9042-air-fuel-ratio-sensor
store_origin: SK
region: Slovakia
---

# 302mm wire length for flexible installation Zirconia solid electrolyte for precise sensing 18mm thread diameter for universal fit 234-9042 Air Fuel Ratio Sensor

**Brand:** denso
**Price:** € 294.64
**Availability:** ✅ In Stock

## Summary

> ⚡ Tune your ride like a pro — precision sensing that drives performance!

## Quick Answers

- **What is this?** 234-9042 Air Fuel Ratio Sensor by denso
- **How much does it cost?** € 294.64 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/173452342-234-9042-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

- • **Built to Last:** Durable, corrosion-resistant materials guarantee long-term reliability under harsh conditions.
- • **Plug & Play Installation:** Designed with an 18mm thread and 302mm wire length for hassle-free, quick setup.
- • **Precision Oxygen Sensing:** Zirconia electrolyte ensures ultra-accurate air-fuel ratio detection for optimal engine performance.
- • **Engine Efficiency Booster:** Accurate readings help fine-tune fuel mix, reducing emissions and improving mileage.
- • **Smart Contaminant Defense:** Porous PTFE filter blocks water and engine grime, protecting sensor integrity.

## Overview

The Denso 234-9042 Air Fuel Ratio Sensor uses advanced zirconia solid electrolyte technology combined with a durable, corrosion-resistant build to deliver precise oxygen level readings. Featuring an 18mm thread diameter and 302mm wire length, it offers easy installation and long-lasting performance, ensuring your engine runs efficiently while minimizing emissions.

## 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.Porous PTFE filter allows atmospheric oxygen the enter the sensor without permitting water or engine contaminants to seep into the casing.

Review: OEM spec Denso O2 sensor. This is an identical OEM part, so it fit perfectly and performed as it should. Yes, it is two or three time more than some copy, but it is the exact right part, not something generic and the original lasted 20+ years.
Review: Funcionó perfecto

## Features

- Manufactured to detect the amount of exhaust gas air fuel ratio
- Constructed from durable material
- Features zirconia solid electrolyte
- Highly accurate
- Easy installation. The thread diameter is 18mm and the wire length is 302mm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Denso |
| Brand | Denso |
| Product Dimensions | 14.61 x 5.56 x 4.78 cm; 111 g |
| Item model number | 234-9042 |
| Manufacturer part number | 234-9042 |
| Item Weight | 111 g |

## Product Details

- **Brand:** Denso
- **Item dimensions L x W x H:** 14.6 x 5.6 x 4.8 centimetres
- **Material:** Alumina
- **Style:** Modern
- **Measurement accuracy:** <5%

## Images

![234-9042 Air Fuel Ratio Sensor - Image 1](https://m.media-amazon.com/images/I/41m7WOJ0XzL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by M***G on 17 February 2024*

OEM spec Denso O2 sensor. This is an identical OEM part, so it fit perfectly and performed as it should. Yes, it is two or three time more than some copy, but it is the exact right part, not something generic and the original lasted 20+ years.

### ⭐⭐⭐⭐⭐ Review
*by L***. on 5 August 2024*

Funcionó perfecto

### ⭐⭐⭐⭐⭐ Review
*by R***. on 12 August 2024*

Works great so far, no check engine light.

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**Shop now:** [https://www.desertcart.sk/products/173452342-234-9042-air-fuel-ratio-sensor](https://www.desertcart.sk/products/173452342-234-9042-air-fuel-ratio-sensor)

---

*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-01-24*