---
product_id: 4595067
title: "Denso 234-9023 Air Fuel Ratio Sensor"
brand: "denso"
price: "₩432464"
currency: KRW
in_stock: true
reviews_count: 13
category: "Denso"
url: https://www.desertcart.kr/products/4595067-denso-234-9023-air-fuel-ratio-sensor
store_origin: KR
region: South Korea
---

# Measures 12:1 to 19:1 air/fuel ratio Quick-response zirconia element 4-wire 15.35-inch harness Denso 234-9023 Air Fuel Ratio Sensor

**Brand:** denso
**Price:** ₩432464
**Availability:** ✅ In Stock

## Summary

> 🚗 Tune in to peak performance with Denso’s precision sensor!

## Quick Answers

- **What is this?** Denso 234-9023 Air Fuel Ratio Sensor by denso
- **How much does it cost?** ₩432464 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/4595067-denso-234-9023-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

- • **Perfect OEM Fit:** Engineered for a first-time, hassle-free installation on 2001-2003 Toyota RAV4 models.
- • **Durability Meets Value:** Trusted by mechanics and drivers alike for lasting performance and cost-effective replacement.
- • **Rapid Oxygen Detection:** Planar zirconia element delivers lightning-fast air/fuel ratio readings for optimal engine tuning.
- • **Fuel Efficiency Booster:** Maintains ideal air/fuel mix to maximize mileage and reduce emissions.
- • **Precision Platinum Electrodes:** Tarnish-proof design ensures longer sensor life and consistent accuracy.

## Overview

The Denso 234-9023 Air Fuel Ratio Sensor is a high-precision replacement part designed specifically for 2001-2003 Toyota RAV4s. Featuring a tarnish-proof platinum electrode and a quick-response planar zirconia element, it accurately measures air/fuel ratios from 12:1 to 19:1. With a 4-wire 15.35-inch harness and exact OEM fit, it ensures easy installation, improved fuel efficiency, and reduced emissions, backed by a trusted brand reputation and strong customer satisfaction.

## Description

Denso part number 234-9023 is a replacement air/fuel ratio sensor for 2001-2003 Toyota RAV4 vehicles.Denso Air/Fuel Ratio 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. The superior design of Denso Air/Fuel Ratio Sensors maximizes engine performance and fuel efficiency while reducing fuel consumption and harmful emissions. Denso Air/Fuel Ratio Sensors increase performance by mapping air/fuel ratios throughout the RPM range. They also reduce emissions by keeping the air-fuel mixture at an optimum ratio. Optimal air/fuel ratios reduce fuel consumption and maximize catalytic converter life. Denso gives you the right part and the right fit, the first time.

Review: Only brand I stand by - This is the only brand that works for my 01 Toyota rav 4. Worth the price. My mechanic has no issues with installation. Sensor functionality is great and quick about removing check engine light
Review: Good Quality, Not up to par with OEM, but good bang for the buck. - I definitely like the cost compared to the OEM Toyota one. Installed this exact same A/F sensor in Bank 1 Sensor 1 position on my 2003 Toyota RAV4 and it lasted 10 years, so I figure I got my money's worth from it. The first time I replaced the sensor it was a huge pain to get out, but the sensor I bought ten years ago (and this one) came with a copper-based anti-seize lube for the threads, which I used. The sensor came right out. The other three sensors are all OEM and still working fine, not replaced since new. Maybe I got a dud the first time, maybe bank 1 sensor 1 gets more wear, I don't know. but ten years is good enough for me.

## Features

- Denso wide-band Air/Fuel Ratio Sensor with 4 wire 15.35 inch long wiring harness
- Part Number: 234-9023
- Application: 2001-2003 Toyota RAV4
- Parts Interchange: 8946742010
- Tarnish-proof platinum electrodes provides longer life and maintains accuracy
- Quick-response planar zirconia element can quickly detect oxygen concentration
- Measures Air/Fuel ratios from approximately 12:1 to 19:1
- Package Quantity: 1
- Item Dimensions: 5.75 x 2.19 x 1.88 Inches
- Item Weight: 0.25 Pounds

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000C5SGHC |
| Best Sellers Rank | #980,506 in Automotive ( See Top 100 in Automotive ) #5,797 in Automotive Replacement Oxygen Sensors |
| Brand Name | Denso |
| Customer Reviews | 4.5 4.5 out of 5 stars (235) |
| Global Trade Identification Number | 00042511110625 |
| Included Components | Air/Fuel Ratio Sensor |
| Item Dimensions | 5.75 x 2.19 x 1.88 inches |
| Item Type Name | Air Fuel Ratio Sensor |
| Item Weight | 0.25 Pounds |
| Manufacturer | Denso |
| Material Type | Stainless Steel, Zirconium |
| Measurement Accuracy | Good |
| Measuring Range | 12.0 - 18.0 |
| Model | 234-9023 |
| Mounting Type | Thread-In |
| Output Type | Electronic |
| Specific Uses For Product | Replacement Air/Fuel Ratio Sensor |
| Style Name | Replacement Part |
| UPC | 042511110625 |
| Warranty Description | Includes manufacturer provided warranty |

## Product Details

- **Brand:** Denso
- **Item Weight:** 0.25 Pounds
- **Item dimensions L x W x H:** 5.75 x 2.19 x 1.88 inches
- **Material:** Stainless Steel, Zirconium
- **Style:** Replacement Part

## Images

![Denso 234-9023 Air Fuel Ratio Sensor - Image 1](https://m.media-amazon.com/images/I/51Zd96752bL.jpg)
![Denso 234-9023 Air Fuel Ratio Sensor - Image 2](https://m.media-amazon.com/images/I/31PhBH5eQxL.jpg)
![Denso 234-9023 Air Fuel Ratio Sensor - Image 3](https://m.media-amazon.com/images/I/51LGnrAmthL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Only brand I stand by
*by H***Y on June 19, 2025*

This is the only brand that works for my 01 Toyota rav 4. Worth the price. My mechanic has no issues with installation. Sensor functionality is great and quick about removing check engine light

### ⭐⭐⭐⭐⭐ Good Quality, Not up to par with OEM, but good bang for the buck.
*by W***1 on April 23, 2022*

I definitely like the cost compared to the OEM Toyota one. Installed this exact same A/F sensor in Bank 1 Sensor 1 position on my 2003 Toyota RAV4 and it lasted 10 years, so I figure I got my money's worth from it. The first time I replaced the sensor it was a huge pain to get out, but the sensor I bought ten years ago (and this one) came with a copper-based anti-seize lube for the threads, which I used. The sensor came right out. The other three sensors are all OEM and still working fine, not replaced since new. Maybe I got a dud the first time, maybe bank 1 sensor 1 gets more wear, I don't know. but ten years is good enough for me.

### ⭐⭐⭐⭐⭐ works on 2001 RAV4
*by M***H on July 30, 2011*

Worked great on 2001 toyota rav4. fits sensor 1 position 1 (in the usa that is the top drivers side sensor). first i read the trouble codes with scangauge II , bought the appropriate oxygen sensor , replaced it, cleared the code, and i haven't had any trouble since. before the rav was stumbling really bad on acceleration and not much power. a week later i pulled out the mass air flow (maf) sensor and cleaned it with maf sensor cleaner because the scangauge was giving me 2 new codes about lean mixture. i used half a can on that sensor. i cleared the codes and haven't seen them since. rav runs great now. i am about to pull the fuel injectors and get them cleaned because the car has over 80K miles on it so i know they need cleaning. i found out you should clean the maf once every few years depending on your environment because air filter lint and other contaminants can built up on it. the maf is actually a combo of maf and iat. i have pics but i will post later. the scangauge2 works great by-the-way , well worth the money. oh, rav is getting 29mpg on highway with the tires at 55psi. can't wait to see what i get with clean fuel injectors. i'll probably clean the throttle body when i remove the injectors i am sure it needs it.

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-04-25*