---
product_id: 58843717
title: "DENSO Iridium TT Spark Plug - IW20TT - Twin Tip - The Powerful Premium Quality Ultra-Efficient Replacement Plug Fits Fiat Mercedes-Benz Honda MG Nissan Porsche Renault Subaru VW Hyundai Daewoo Lotus"
brand: "denso"
price: "€ 29.76"
currency: EUR
in_stock: true
reviews_count: 1
category: "Denso"
url: https://www.desertcart.pt/products/58843717-denso-iridium-tt-spark-plug-iw20tt-twin-tip-the-powerful
store_origin: PT
region: Portugal
---

# φ0.4mm Iridium center electrode Twin Tip design for max power 14mm diameter, 19mm thread length DENSO Iridium TT Spark Plug - IW20TT - Twin Tip - The Powerful Premium Quality Ultra-Efficient Replacement Plug Fits Fiat Mercedes-Benz Honda MG Nissan Porsche Renault Subaru VW Hyundai Daewoo Lotus

**Brand:** denso
**Price:** € 29.76
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite Performance, Drive with Confidence!

## Quick Answers

- **What is this?** DENSO Iridium TT Spark Plug - IW20TT - Twin Tip - The Powerful Premium Quality Ultra-Efficient Replacement Plug Fits Fiat Mercedes-Benz Honda MG Nissan Porsche Renault Subaru VW Hyundai Daewoo Lotus by denso
- **How much does it cost?** € 29.76 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/58843717-denso-iridium-tt-spark-plug-iw20tt-twin-tip-the-powerful)

## 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

- • **Twin Tip Technology:** Double needle electrode accelerates flame kernel for peak engine power and efficiency.
- • **Laser-Welded Durability:** All-around laser welding ensures unmatched reliability under extreme driving conditions.
- • **Wide Vehicle Compatibility:** Fits premium brands like Mercedes, Porsche, Honda, VW, and more—upgrade your ride effortlessly.
- • **Electromagnetic Noise Suppression:** Built-in resistor eliminates interference, protecting your vehicle’s electronics.
- • **Precision Iridium Center Electrode:** Ultra-fine 0.4mm tip reduces spark voltage for lightning-fast ignition.

## Overview

The DENSO Iridium TT IW20TT spark plug features a precision 0.4mm iridium center electrode and a twin tip design that maximizes ignition efficiency and engine power. Engineered with laser welding for durability and a built-in resistor to prevent electromagnetic interference, it fits a wide range of premium vehicles including Mercedes-Benz, Porsche, Honda, and VW. This premium spark plug delivers improved acceleration, fuel economy, and longevity, making it the ultimate upgrade for discerning drivers.

## Description

Buy DENSO Iridium TT Spark Plug - IW20TT - Twin Tip - The Powerful Premium Quality Ultra-Efficient Replacement Plug Fits Fiat Mercedes-Benz Honda MG Nissan Porsche Renault Subaru VW Hyundai Daewoo Lotus at desertcart UK. Free delivery on eligible orders.

Review: Genuine Denso - Great spark plug, I checked these carefully on receipt to make sure they where genuine (as there are a lot of fakes about).

## Features

- IW20TT | Twin Tip Plug | Tightneing Torque (Nm): 22 | 1 - Earthed Electrode | Diameter (mm): 14 | Thread Length (mm): 19
- The Finest Twin Tip plug with improved acceletation, fuel economy and longevity compared to single tip plugs. The quenching effect has been decreased by forming the electrode into a double needle shape. As a result, the flame kernel rapidly develops and the engine’s power is drawn out to its maximum potential. DENSO IRIDIUM TT spark plugs have a φ0.4 mm iridium alloy center electrode and a 0.7 mm needle-type platinum alloy ground electrode.
- The iridium tip is mounted with an “All-around Laser Welding” method that insures high reliability even under the most severe driving conditions.
- Using DENSO’s exclusive iridium alloy having a very high melting point, the tip of the center electrode can be shaped very thin and fine, reducing spark voltage requirements and greatly improving ignitability.
- All specification types include an embedded, highly reliable, monolithic resistor to eliminate electoromagnetic noise interference from all kinds of electronic devices.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00TPUA6I2 |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | 355,233 in Automotive ( See Top 100 in Automotive ) 1,452 in Car Spark Plugs |
| Brand | Denso |
| Brand Name | Denso |
| Compatible with Vehicle Type | Car, Van |
| Core Material | Iridium |
| Core material | Iridium |
| Country Of Origin | Japan |
| Customer Reviews | 5.0 out of 5 stars 11 Reviews |
| EU Spare Part Availability Duration | 1 Years |
| Global Trade Identification Number | 00042511047099 |
| Included Components | Iridium TT Spark Plug x1 |
| Item Type Name | Spark Plug |
| Item Weight | 0.12 Pounds |
| Manufacturer | Tetrosyl Express Limited |
| Manufacturer Part Number | IW20TT |
| Manufacturer Warranty Description | 2 Year Manufacturer |
| Model Number | IW20TT |
| OEM Equivalent Part Number | 0948200154, 101000002AE, 101000047AB, 1UD118110, 1UT118110 |
| Thread Size | 14 millimeters |
| Thread size | 14 millimeters |
| Top Material Type | iridium |
| Top material type | iridium |
| UPC | 042511047099 |
| Unit Count | 1.0 count |
| Vehicle service type | Car, Van |

## Product Details

- **Brand:** Denso
- **Core material:** Iridium
- **Thread size:** 14 millimeters
- **Top material type:** iridium
- **Vehicle service type:** Car, Van

## Images

![DENSO Iridium TT Spark Plug - IW20TT - Twin Tip - The Powerful Premium Quality Ultra-Efficient Replacement Plug Fits Fiat Mercedes-Benz Honda MG Nissan Porsche Renault Subaru VW Hyundai Daewoo Lotus - Image 1](https://m.media-amazon.com/images/I/812UZ3IkwJL.jpg)
![DENSO Iridium TT Spark Plug - IW20TT - Twin Tip - The Powerful Premium Quality Ultra-Efficient Replacement Plug Fits Fiat Mercedes-Benz Honda MG Nissan Porsche Renault Subaru VW Hyundai Daewoo Lotus - Image 2](https://m.media-amazon.com/images/I/61KYqBAf6EL.jpg)
![DENSO Iridium TT Spark Plug - IW20TT - Twin Tip - The Powerful Premium Quality Ultra-Efficient Replacement Plug Fits Fiat Mercedes-Benz Honda MG Nissan Porsche Renault Subaru VW Hyundai Daewoo Lotus - Image 3](https://m.media-amazon.com/images/I/61shxT8JYxL.jpg)
![DENSO Iridium TT Spark Plug - IW20TT - Twin Tip - The Powerful Premium Quality Ultra-Efficient Replacement Plug Fits Fiat Mercedes-Benz Honda MG Nissan Porsche Renault Subaru VW Hyundai Daewoo Lotus - Image 4](https://m.media-amazon.com/images/I/71SwrqSERhL.jpg)
![DENSO Iridium TT Spark Plug - IW20TT - Twin Tip - The Powerful Premium Quality Ultra-Efficient Replacement Plug Fits Fiat Mercedes-Benz Honda MG Nissan Porsche Renault Subaru VW Hyundai Daewoo Lotus - Image 5](https://m.media-amazon.com/images/I/61mlMQvCKzL.jpg)

## Questions & Answers

**Q: What is the heat range rating on this plug?**
A: Here is a comparable heat range chart: https://www.densoproducts.com/learning-center/article/225/heat-range-conversion-chart, obviously this is a 20 plug.

**Q: Are these denso (4709) iw20tt spark-plugs delivered "pre-gapped" to the customer?**
A: As in any spark plug (SP) user, you should always check the gap. The same SP could be used in different engines and/or applications. So, BE EXTRA CAREFUL GAPPING these SP because the center electrode is .040 in dia. Will snap off very easily. I put them in a vice with vg light and carefully gap to what I need. I use non-nickel anti-seize on the threads whether the heads are aluminum or CI. Torque to factory specs. Good luck

## Customer Reviews

### ⭐⭐⭐⭐⭐ Genuine Denso
*by D***R on 25 July 2025*

Great spark plug, I checked these carefully on receipt to make sure they where genuine (as there are a lot of fakes about).

---

## 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.pt/products/58843717-denso-iridium-tt-spark-plug-iw20tt-twin-tip-the-powerful](https://www.desertcart.pt/products/58843717-denso-iridium-tt-spark-plug-iw20tt-twin-tip-the-powerful)

---

*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-06-19*