---
product_id: 54614220
title: "Iridium TT Spark Plug - IXEH20TT - Twin Tip - The Powerful Premium Quality Ultra-Efficient Replacement Plug"
brand: "denso"
price: "$53.16"
currency: USD
in_stock: true
reviews_count: 5
category: "Denso"
url: https://www.desertcart.us/products/54614220-iridium-tt-spark-plug-ixeh20tt-twin-tip-the-powerful-premium
store_origin: US
region: United States of America
---

# 0.4mm ultra-fine iridium electrode Twin-tip design for max combustion 12mm thread diameter & 26.5mm length Iridium TT Spark Plug - IXEH20TT - Twin Tip - The Powerful Premium Quality Ultra-Efficient Replacement Plug

**Brand:** denso
**Price:** $53.16
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite your drive with precision power and unstoppable efficiency!

## Quick Answers

- **What is this?** Iridium TT Spark Plug - IXEH20TT - Twin Tip - The Powerful Premium Quality Ultra-Efficient Replacement Plug by denso
- **How much does it cost?** $53.16 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/54614220-iridium-tt-spark-plug-ixeh20tt-twin-tip-the-powerful-premium)

## 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

- • **EMI Noise Eliminator:** Built-in monolithic resistor blocks electromagnetic interference, protecting your vehicle’s sensitive electronics.
- • **Twin-Tip Turbocharge:** Innovative 0.7mm platinum ground electrode paired with iridium center boosts combustion efficiency and fuel economy.
- • **Laser-Welded Durability:** 360° all-around laser welding ensures unmatched electrode strength under the harshest driving conditions.
- • **Engineered for Longevity:** Premium iridium and platinum materials deliver extended lifespan, reducing maintenance and maximizing uptime.
- • **Precision Ignition Mastery:** Ultra-fine 0.4mm iridium center electrode slashes spark voltage for lightning-fast starts and peak engine power.

## Overview

The DENSO Iridium TT Spark Plug IXEH20TT features a cutting-edge twin-tip design combining a 0.4mm iridium center electrode and a 0.7mm platinum ground electrode, laser-welded for superior durability. This plug reduces spark voltage requirements, enhances combustion efficiency, and improves fuel economy while minimizing electromagnetic interference. Engineered in Japan, it offers long-lasting performance and reliability for cars and vans, backed by a 2-year manufacturer warranty.

## Description

From the manufacturer 1. Built-in Resistor: All specification types include an embedded, highly reliable, monolithic resistor to eliminate electromagnetic noise interference from all kinds of electronic devices. 2. 360° Laser Welding: The iridium tip is mounted with an All-around Laser Welding method that insures high reliability even under the most severe driving conditions. 3. 0.7mm Needle-Shaped Platinum Ground Electrode: To prevent a quenching effect, the ground electrode needs to be as small as possible. Traditional ground electrodes could not be made too small without reducing grounding strength or increasing electrode wear. However, we’ve attached a strong, fine 0.7mm-diameter platinum electrode using a 360° laser welding technique. 4. 0.4mm Ultra-fine Iridium Centre Electrode: Using DENSO’s exclusive iridium alloy having a very high melting point, the tip of the centre electrode can be shaped very thin and fine, reducing spark voltage requirements and greatly improving ignitability. Advantages of Fine Ground Electrodes To lower the required voltage and improve firing performance. The most advanced technology in the world has been employed to enable use of electrode, at 0.4 mm in diameter, in the IRIDIUM TT. The smaller the electrode the more concentrated the electric potential at the tip of the electrode and the stronger the electric field that affects required voltage and the lower the required voltage. As a result, combustion is good for all types of driving, the engine starts easily, and acceleration improves. The above shows the strength of electrical field in case certain voltage changes on Iridium plug and IRIDIUM TT. The stronger the electrical field gets, the easier it becomes to fire with low voltage. *1 FEM (Finite Element Method analysis): General method to measure electrical field strength. DENSO Nickel Spark Plug Design Purpose : This is Denso’s basic spark plug range, focused on affordability and reliability. Features : These plugs use a traditional nickel alloy for both the center and ground electrodes. Nickel alloy is durable and provides reliable ignition but wears out faster compared to iridium or platinum. Durability : As an entry-level plug, the nickel spark plug has a shorter lifespan and may need more frequent replacements than iridium or platinum options. Ideal for : Standard, non-performance-oriented vehicles where affordability is prioritized over longevity or enhanced performance. Common in older or everyday vehicles where basic, reliable ignition is sufficient. DENSO Nickel Twin-Tip Spark Plug Design Purpose : Offers a performance upgrade over standard nickel plugs, with an emphasis on improved ignition efficiency and economy. Features : Nickel TT plugs feature a twin-tip design, with a 1.5mm nickel centre electrode and a 1.5mm ground electrode. The twin-tip design is unique because it produces a more focused spark, which improves combustion efficiency. Durability : While still nickel-based, the twin-tip design slightly improves combustion quality and efficiency. However, these are not as long-lasting as iridium plugs. Ideal for : Drivers looking for better ignition performance and fuel economy at a more affordable price point than iridium. These plugs work well in vehicles needing a balance of economy and performance without the premium price of iridium plugs. DENSO Iridium Spark Plug Design Purpose : This plug range is designed for improved longevity and performance over nickel plugs, making it a popular choice for most vehicles. Features : The Denso Iridium plug uses a 0.4mm iridium centre electrode, which is more durable than nickel and platinum. This ultra-fine electrode produces a highly efficient spark, requiring less voltage and delivering a more complete combustion. Durability : These plugs offer significantly longer life than nickel plugs due to the hard-wearing iridium material, making them a lower-maintenance choice. Ideal for : Daily drivers and light performance vehicles where extended service life and reliable ignition are important. It’s a versatile option that offers better performance than nickel while still being cost-effective over time. DENSO Iridium Twin-Tip Spark Plug Design Purpose : The pinnacle of road vehicle spark plug design, high-performance and cost effectiveness, this plug maximizes efficiency and performance perfectly bridging the gap between Power and Tough. Features : Iridium TT plugs have a unique twin-tip design, combining an ultra-fine 0.4mm iridium alloy centre electrode with a 0.7mm platinum ground electrode. This combination enhances combustion efficiency, improves fuel economy, and reduces emissions. Durability : The combination of iridium and platinum makes it a durable plug with excellent performance, positioned between Iridium Tough and Iridium Power in terms of lifespan and performance balance. Ideal for : Drivers looking for high efficiency and power in a cost-effective package. This plug suits a wide range of vehicles, offering both performance and economy. Explore the entire DENSO Iridium Range DENSO IRIDIUM TOUGH Design Purpose : Built for road vehicles to deliver long-lasting performance with a balance of fuel efficiency and power. Features : The Iridium Tough plugs have an iridium alloy centre electrode, which is harder and more heat-resistant than traditional materials, making it ideal for longevity and consistent performance. Durability : These plugs are designed for extended service life and are a good choice for daily drivers who want reliability over many tens of thousands of miles. Ideal for : Long-term, everyday driving with a focus on fuel economy and reliable ignition over many miles. Often a choice for vehicles where drivers don’t need high-performance but prefer minimal maintenance. DENSO IRIDIUM POWER Design Purpose : Geared more towards performance improvement in road vehicles, with a focus on power and throttle response. Features : Iridium Power plugs have a 0.4mm diameter iridium alloy centre electrode, which is one of the smallest on the market, creating a more intense spark. This smaller electrode requires less voltage, leading to faster and more efficient combustion. Durability : While not as long-lasting as Iridium Tough, they still provide solid longevity with a focus on performance. Ideal for : Drivers who want improved throttle response and acceleration. Great for sporty drivers and high-performance vehicles where a slight performance boost is desirable. DENSO IRIDIUM RACING Design Purpose : Engineered for all out high-performance racing vehicle applications, where extreme conditions require superior durability and ignition performance. Features : Iridium Racing plugs are built with a specialized insulator design to handle high temperatures and pressures, and they have a reinforced centre electrode for maximum durability under torturous racing conditions. Durability : These plugs can withstand the high loads of racing engines but are generally not intended for long life; they’re focused only on high-end performance and reliability under extreme conditions. Ideal for : High-performance racing vehicles that undergo intense conditions. These are suitable for race cars or heavily modified vehicles where maximizing power output and ignition reliability under extreme conditions is essential.

Review: La calidad del producto - Excelente calidad, es lo que buscamos los clientes, de verdad que se nota el cambio en el desempeño del auto, de usar bujias convencionales, a las de Iridium originales. Estoy muy contento con el producto.
Review: Exactly what I needed! Delivered fast with good customer service!

## Features

- IXEH20TT | Twin Tip Plug | Tightneing Torque (Nm): 17 | 1 - Earthed Electrode | Diameter (mm): 12 | Thread Length (mm): 26.5
- 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 | B00TPUAJIY |
| Best Sellers Rank | 80,410 in Automotive ( See Top 100 in Automotive ) 362 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 | 4.5 out of 5 stars 414 Reviews |
| Gap Size | 0.3 Millimeters |
| Global Trade Identification Number | 00042511047112 |
| Included Components | Iridium TT Spark Plug x1 |
| Item Type Name | Spark Plug |
| Item Weight | 0.04 Kilograms |
| Manufacturer | DENSO Corporation |
| Manufacturer Part Number | IXEH20TT |
| Manufacturer Warranty Description | 2 Year Manufacturer |
| Thread Size | 12 millimeters |
| Thread size | 12 millimeters |
| Top Material Type | Metal |
| Top material type | Metal |
| UPC | 042511047112 |
| Unit Count | 1.0 count |
| Vehicle service type | Car, Van |

## Product Details

- **Brand:** Denso
- **Core material:** Iridium
- **Thread size:** 12 millimeters
- **Top material type:** Metal
- **Vehicle service type:** Car, Van

## Images

![Iridium TT Spark Plug - IXEH20TT - Twin Tip - The Powerful Premium Quality Ultra-Efficient Replacement Plug - Image 1](https://m.media-amazon.com/images/I/812UZ3IkwJL.jpg)

## Questions & Answers

**Q: does this has 0.004 size difference? is it issue ?  oem is 0.004**
A: If you are driving a Mazda Skyactive engine newer than 2012, you should be o.k.. In 2012, the stock Skyactive 2.0 uses the OEM spark plug with 0.032 gap, then the Mazda revised the spec to 0.040 gap for the vehicle after 2013. The newest spec is 0.044. The older 4711 spark plug has 0.032 then I just notice it is now 0.040. As long as your car is updated with the latest Mazda software, you should be o.k.. Personal note, this Denso 4711 burns better in my opnion and it is cheaper too.

**Q: work to nissan versa 2009? engine 1.8**
A: According to their website, yes.http://densoautoparts.com/find-my-part/vehicle-selectionAssuming it's the s-1.8L engine.

**Q: Hola son compatibles para un Toyota Corolla 2016?**
A: Si

**Q: Would it fit corolla 1.6l 2011?**
A: There was no 1.6L engine offered for a 2011 Toyota Corolla so I assume you have a 1.8L engine which would take Denso IXEH20TT or Denso SC20HR11 (Iridium Long Life).

## Customer Reviews

### ⭐⭐⭐⭐⭐ La calidad del producto
*by A***Z on 4 March 2024*

Excelente calidad, es lo que buscamos los clientes, de verdad que se nota el cambio en el desempeño del auto, de usar bujias convencionales, a las de Iridium originales. Estoy muy contento con el producto.

### ⭐⭐⭐⭐⭐ Exactly what I needed! Delivered fast with good customer service!
*by R***B on 15 November 2019*



### ⭐⭐ Conforme mais très mal emballé.
*by X***R on 9 January 2026*

Produit conforme, mais emballage et livraison chaotique. Les bougies étaient sorties de leur emballage, ne garantissant pas leur fonctionnement. Elles ont pu s'entrechoquer avec la porcelaine. La partie IRIDIUM est quand à elle protégé par une partie en plastique. Il ne devrait pas y avoir de problème sur cette partie. Experience mauvaise car pièce stratégique dans un moteur. Crainte de casse de la partie porcelaine sur la longueure.

## Frequently Bought Together

- Denso (4711) IXEH20TT Iridium TT Spark Plug, (Pack of 1)
- Denso 143-3005 Air Filter
- Genuine Toyota 04152-YZZA6 Replaceable Oil Filter Element

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-05*