---
product_id: 16805839
title: "NTK 21539 Oxygen Sensor"
brand: "ntk"
price: "€ 110.70"
currency: EUR
in_stock: true
reviews_count: 8
category: "Ntk"
url: https://www.desertcart.nl/products/16805839-ntk-21539-oxygen-sensor
store_origin: NL
region: Netherlands
---

# Precision monitoring Durable construction Corrosion resistant NTK 21539 Oxygen Sensor

**Brand:** ntk
**Price:** € 110.70
**Availability:** ✅ In Stock

## Summary

> Breathe Easy with NGK! 🌬️

## Quick Answers

- **What is this?** NTK 21539 Oxygen Sensor by ntk
- **How much does it cost?** € 110.70 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/16805839-ntk-21539-oxygen-sensor)

## Best For

- ntk enthusiasts

## Why This Product

- Trusted ntk brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Easy Installation:** User-friendly design for a hassle-free setup.
- • **Enhanced Longevity:** Designed to last, reducing the need for frequent replacements.
- • **Unmatched Durability:** Crafted from high-quality materials for long-lasting performance.
- • **Precision Oxygen Monitoring:** Accurately checks oxygen levels in exhaust for optimal engine performance.
- • **Corrosion & Abrasion Resistance:** Engineered to withstand harsh conditions, ensuring reliability.

## Overview

The NGK 21539 Oxygen Sensor is a high-performance component designed to monitor oxygen levels in your vehicle's exhaust system. Built with durable materials, it offers exceptional resistance to corrosion and abrasion, ensuring a long lifespan and reliable performance.

## Description

Each NTK sensor is designed specifically for an OEM application, down to the wire length, protective sleeve material, grommets, clips and protection tube design. NTK is continuously developing sensor technologies to work with new advanced vehicle computer components.

Review: Works as advertised. - Always had cummy luck with Bosch and other off brands. Now I always use denso or ntk/ngk o2 sensors. No surprise that this one worked, they nearly always do. If you are sure you need an owner sensor, you can't go wrong with ngk.
Review: If you buy a replace a part make shure it's the same like the old one. - I barely replace today this oxygen sensor and fits perfectly I take a ride to see the difference and my car feels more smooth and stronger.

## Features

- NTK O2 sensors are designed specifically for OEM applications
- Supplied with a factory-fitted OE connector for easy installation
- Optimizes emissions and fuel economy
- Extensively tested during manufacturing to guarantee quality and reliability
- Refer to desertcart confirmed fit to verify upstream, downstream, bank 1 or bank 2 position for your vehicle

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000HDDCMS |
| Best Sellers Rank | #1,056,980 in Automotive ( See Top 100 in Automotive ) #6,098 in Automotive Replacement Oxygen Sensors |
| Brand | NTK |
| Brand Name | NTK |
| Customer Reviews | 4.4 out of 5 stars 45 Reviews |
| Global Trade Identification Number | 00087295215395 |
| Included Components | Oxygen Sensor, Installation Instructions |
| Item Dimensions | 16.25 x 1 x 1 inches |
| Item Type Name | Oxygen Sensor |
| Item Weight | 3.68 ounces |
| Item dimensions L x W x H | 16.25 x 1 x 1 inches |
| Manufacturer | NGK |
| Material | Metal |
| Material Type | Metal |
| Model | 21539 |
| Mounting Type | Flange Mount |
| Output Type | Push-Pull |
| Part Number | 21539 |
| Smart Home Compatibility | Not Smart Home Compatible |
| Specific Uses For Product | Oxygen Sensor |
| Style | Modern |
| Style Name | Modern |
| UPC | 087295215395 |
| Unit Count | 1.0 Count |
| Warranty Description | 60 Day |

## Images

![NTK 21539 Oxygen Sensor - Image 1](https://m.media-amazon.com/images/I/61bTflAJ1uL.jpg)
![NTK 21539 Oxygen Sensor - Image 2](https://m.media-amazon.com/images/I/616Kdul3EsL.jpg)
![NTK 21539 Oxygen Sensor - Image 3](https://m.media-amazon.com/images/I/518CuCTCUwL.jpg)
![NTK 21539 Oxygen Sensor - Image 4](https://m.media-amazon.com/images/I/31CG8VDwVUL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works as advertised.
*by D***E on July 7, 2018*

Always had cummy luck with Bosch and other off brands. Now I always use denso or ntk/ngk o2 sensors. No surprise that this one worked, they nearly always do. If you are sure you need an owner sensor, you can't go wrong with ngk.

### ⭐⭐⭐⭐⭐ If you buy a replace a part make shure it's the same like the old one.
*by M***. on January 9, 2019*

I barely replace today this oxygen sensor and fits perfectly I take a ride to see the difference and my car feels more smooth and stronger.

### ⭐⭐⭐⭐⭐ It works
*by J***C on February 17, 2019*

It worked on the pick up I installed it on, very easy to do.

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**Shop now:** [https://www.desertcart.nl/products/16805839-ntk-21539-oxygen-sensor](https://www.desertcart.nl/products/16805839-ntk-21539-oxygen-sensor)

---

*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-06-05*