---
product_id: 311697927
title: "Denso 234-4621 Oxygen Sensor"
brand: "denso"
price: "₩100086"
currency: KRW
in_stock: true
reviews_count: 6
category: "Denso"
url: https://www.desertcart.kr/products/311697927-denso-234-4621-oxygen-sensor
store_origin: KR
region: South Korea
---

# High-grade platinum sensor OE precision fit Double protection layers Denso 234-4621 Oxygen Sensor

**Brand:** denso
**Price:** ₩100086
**Availability:** ✅ In Stock

## Summary

> 🛠️ Upgrade your ride’s breathability with precision and protection!

## Quick Answers

- **What is this?** Denso 234-4621 Oxygen Sensor by denso
- **How much does it cost?** ₩100086 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/311697927-denso-234-4621-oxygen-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

- • **Premium Materials:** Constructed with stainless steel housing and high-grade platinum for superior sensitivity and corrosion resistance.
- • **Trusted Performance:** Backed by a 4.5-star rating and top rankings in automotive oxygen sensors—join thousands who trust Denso.
- • **Effortless Installation:** Designed for quick, hassle-free setup so you can get back on the road faster.
- • **Precision OE Standard Fit:** Engineered for seamless integration and reliable performance in your vehicle’s exhaust system.
- • **Advanced Double Protection:** Features aluminum oxide trap and PTFE filter layers to ensure durability and sensor longevity.

## Overview

The Denso 234-4621 Oxygen Sensor is a high-quality, OE-standard replacement part designed to accurately monitor oxygen levels in your vehicle’s exhaust. Featuring a robust double protection system with aluminum oxide and PTFE layers, plus a stainless steel housing and platinum sensor, it ensures durability and precise readings. Easy to install and highly rated, it’s a trusted choice for maintaining optimal engine performance and fuel efficiency.

## 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: Check engine light remain on - My car is forester 2003, there is issue with socket not fit 100% not clicking when u fix . And check engine still light on . Maybe its not suitable. No idea
Review: Exactly what I wanted. Works great. Secondary O2 sensor for a 2003 ACURA EL.

## Features

- Designed to detect the amount of oxygen in the exhaust system
- Constructed from high quality material
- Features double protection layer, aluminum oxide trap layer, PTFE filter and stainless steel housing
- Manufactured with precision to meet OE standards
- Easy installation

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000C5YCUM |
| Best Sellers Rank | #64,891 in Automotive ( See Top 100 in Automotive ) #186 in Car Exhaust Oxygen Sensors |
| Brand | Denso |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,127) |
| Date First Available | 14 August 2012 |
| Item Weight | 113 g |
| Item model number | 234-4621 |
| Manufacturer | Denso |
| Manufacturer Part Number | 234-4621 |
| Model | OXYGEN SENSOR |
| OEM Part Number | 234-4621 |
| Product Dimensions | 14.61 x 5.56 x 4.78 cm; 113.4 g |

## Product Details

- **Brand:** Denso
- **Item dimensions L x W x H:** 14.6 x 5.6 x 4.8 centimeters
- **Item weight:** 0.25 Pounds
- **Material:** Zirconium
- **Style:** Modern

## Images

![Denso 234-4621 Oxygen Sensor - Image 1](https://m.media-amazon.com/images/I/41Vr0W9V49L.jpg)
![Denso 234-4621 Oxygen Sensor - Image 2](https://m.media-amazon.com/images/I/31i3lcFbj7L.jpg)
![Denso 234-4621 Oxygen Sensor - Image 3](https://m.media-amazon.com/images/I/51zoNv-x6uL.jpg)
![Denso 234-4621 Oxygen Sensor - Image 4](https://m.media-amazon.com/images/I/61bYxKtxCvL.jpg)

## Questions & Answers

**Q: Is this the downstream O2 sensor for a 2002 accord 4cyl SE?**
A: Yes, this is the correct downstream sensor that is located inside the catalytic converter on your vehicle.Denso has a parts fitment website that verifies the correct part number 234-4621:http://densoautoparts.com/find-my-part/vehicle-selection

**Q: Work for honda cívic 2003?**
A: Yes I installed on my 03 Honda civic ex coupe.

**Q: Is it fit to Lexus2000. RX300**
A: Hi no this does not fit your vehicle you need to put your car details in where it says car garage in accounts then check which will fit

**Q: Will this work on 2002 honda crv 2.4 l engine?**
A: I used it for my 1999 Honda Accord 4cyl and it worked for my upper O2 replacement. It cleared an old code.

## Customer Reviews

### ⭐⭐ Check engine light remain on
*by M***. on 21 February 2022*

My car is forester 2003, there is issue with socket not fit 100% not clicking when u fix . And check engine still light on . Maybe its not suitable. No idea

### ⭐⭐⭐⭐⭐ Review
*by N***. on 25 October 2018*

Exactly what I wanted. Works great. Secondary O2 sensor for a 2003 ACURA EL.

### ⭐⭐⭐⭐⭐ Review
*by D***C on 3 February 2017*

Wow, just wow. This product just saved my car. First off, I am a 24 year old woman who know absolutely nothing about cars. But I was pretty adamant about fixing my own vehicle. Especially knowing that I was not going to pay someone else to do an easy job. After countless research I came across this product on Amazon. This Denso 234-4621 Oxygen Sensor is described to be a exact fit on my car. I've come to learn that it's best to get the exact fit rather than universal oxygen sensors. My car is a 2001 Honda Accord, V4 EX 2.3 F23A4 Engine . It is ULEV which stands for Ultra-Low Emission Vehicle and means that the car emit cleaner emissions. My car was diagnosed with a Check Engine Light unfortunately after getting a new transmission. Using my Veepeek OBD2 Code Reader, I received the code of P0141 "O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)." If you're interested in the code reader, I will link it below. My 2001 Honda Accord has TWO sensors. I made the mistake of not realizing what this code meant. The code was for the oxygen sensor located UNDERNEATH my car where the catalytic converter was, and not the one located underneath my HOOD in front of the catalytic converter. If you're interested in the oxygen sensor underneath the hood known as an "upstream" sensor, you are looking for a Denso 234-9014 Air Fuel Ratio Sensor which you can also purchase on Amazon. So just to make sure this makes sense, Denso 234-4621, a downstream sensor (the product being reviewed) is what you're looking for if you're receiving the P0141 Code and it is UNDERNEATH your car where the catalytic converter is located. The Denso 234-9014 is an upstream sensor that is located in front of your catalytic converter underneath your HOOD. Even though I was mistaken on which sensors I needed, turned out I still needed a new Denso 234-9014 upstream sensor due to mine being oxidized after pulling it out. Anyways, I bought a 2 different things to work on my car: Stanley 91-929 3/8-Inch Drive Pear Head Quick Release Ratchet & RamPro 3 Piece Oxygen Sensor Kit. I will link the products below. Anyways, you want to go underneath your car to where your catalytic converter is. Using the RampPro Oxygen Sensor Kit, you insert the oxygen sensor socket where your sensors are in the catalytic converter, and use the 3/8" ratchet to tug and release the bad sensor. Just replace it with the new sensor and screw it on tight with the ratchet. And wolah! These two products worked perfect on my vehicle, and after replacing both of my oxygen sensors, I used my Veekpeek Code reader to erase the code! My car is now Check Engine Light free! Please do your research before purchasing any of these products mentioned in the review. And safety first! Please don't try to attempt to work on your vehicle without knowing the risks. This review is solely meant to indicate that this is the proper sensor for your vehicle if it is the correct year, make, model, engine, and ULEV. I hope this review helps someone out there. I will link the products I purchased to erase my check engine light for good below. Veepeek OB2 Code Reader https://www.amazon.com/gp/product/B01I8UJ0V8/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1 Denso 234-9014 Air Fuel Ratio Sensor (Upstream) https://www.amazon.com/gp/product/B000C5UFW6/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1 Stanley 91-929 3/8-Inch Drive Pear Head Quick Release Ratchet https://www.amazon.com/gp/product/B000NJ63UY/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1 RamPro 3 Piece 3/8 & ½” Drive O2 Oxygen Sensor Wrench Socket Tool Set – 1 Vacuum Switch Socket & 2 Puller Sockets Kit – Universal 7/8” / 22mm Professional Grade Removal Tool for Cars & Automotive https://www.amazon.com/gp/product/B01IAH7MSC/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1

## Frequently Bought Together

- Denso 234-4621 Oxygen Sensor
- Denso 234-4727 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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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-23*