--- product_id: 16805839 title: "NTK 21539 Oxygen Sensor" brand: "ntk" price: "€ 98.91" currency: EUR in_stock: true reviews_count: 8 category: "Ntk" url: https://www.desertcart.it/products/16805839-ntk-21539-oxygen-sensor store_origin: IT region: Italy --- # Optimizes emissions & fuel economy Factory-fitted OE connector OEM-specific design precision NTK 21539 Oxygen Sensor **Brand:** ntk **Price:** € 98.91 **Availability:** ✅ In Stock ## Summary > 🌟 Upgrade your ride with precision sensing—because your engine deserves the best! ## Quick Answers - **What is this?** NTK 21539 Oxygen Sensor by ntk - **How much does it cost?** € 98.91 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/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 - • **Precision OEM Fit:** Engineered down to wire length and protective materials for flawless compatibility. - • **Proven Reliability:** Extensively tested during manufacturing to ensure consistent, long-lasting performance. - • **Eco-Performance Boost:** Enhances fuel efficiency while reducing harmful emissions, making your ride greener. - • **Verified Vehicle Match:** Use Desertcart’s confirmed fit guide to find the perfect upstream/downstream sensor for your car. - • **Plug & Play Installation:** Comes with factory-fitted OE connector for hassle-free setup—no mechanic needed. ## Overview The NTK 21539 Oxygen Sensor is a high-quality, OEM-specific replacement part designed for precise fit and optimal vehicle performance. Featuring a factory-fitted OE connector, it ensures easy installation and reliable operation. This sensor improves fuel economy and reduces emissions, backed by rigorous manufacturing tests for durability. Perfectly matched to your vehicle’s specifications, it’s the trusted choice for millennial professionals who demand efficiency and eco-conscious driving. ## 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. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.it/products/16805839-ntk-21539-oxygen-sensor](https://www.desertcart.it/products/16805839-ntk-21539-oxygen-sensor) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-06-24*