---
product_id: 42235256
title: "Denso(4709) IW20TT Iridium TT Spark Plug, (Pack of 1)"
brand: "denso"
price: "VT4619"
currency: VUV
in_stock: true
reviews_count: 4
url: https://www.desertcart.vu/products/42235256-denso-4709-iw20tt-iridium-tt-spark-plug-pack-of-1
store_origin: VU
region: Vanuatu
---

# 0.4mm iridium center electrode - max spark efficiency 0.7mm platinum ground electrode - higher spark energy 360° laser welding - unmatched durability & strength Denso(4709) IW20TT Iridium TT Spark Plug, (Pack of 1)

**Brand:** denso
**Price:** VT4619
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite your ride with precision power and unbeatable efficiency!

## Quick Answers

- **What is this?** Denso(4709) IW20TT Iridium TT Spark Plug, (Pack of 1) by denso
- **How much does it cost?** VT4619 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/42235256-denso-4709-iw20tt-iridium-tt-spark-plug-pack-of-1)

## 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

- • **Compact Powerhouse:** Lightweight and perfectly sized for UTVs, blending efficiency with rugged performance.
- • **Heat-Resistant Design:** 0.7mm needle tip ground electrode minimizes heat quenching for consistent ignition.
- • **Fuel-Savvy Performance:** Larger spark size delivers superior fuel economy without compromising power.
- • **Laser-Welded Durability:** DENSO’s patented 360° laser welding ensures a rock-solid bond and long-lasting reliability.
- • **Precision Spark Mastery:** World’s smallest 0.4mm iridium center electrode for peak firing potential and engine responsiveness.

## Overview

The Denso IW20TT Iridium TT Spark Plug features a 0.4mm iridium center electrode and 0.7mm platinum ground electrode, engineered for maximum spark efficiency and superior fuel economy. Its patented 360° laser welding guarantees exceptional durability, making it an ideal high-performance spark plug for UTVs and other demanding vehicles.

## Description

Denso(4709) IW20TT Iridium TT Spark Plug, (Pack of 1)

## Features

- Denso # 4709
- 0.4mm Iridium Center Electrode
- 0.7mm Platinum Ground Electrode
- Larger spark translates to more power and superior fuel economy
- 0.4 mm iridium center electrode: world's smallest diameter that maximizes firing potential
- 0.7 mm needle tip ground electrode: promotes higher spark energy and less heat quenching
- DENSO patented 360 degree laser welding process, ensuring exceptional quality bond and structural strength with the iridium center electrode
- DENSO patented 360 degree laser welding process, ensuring exceptional quality bond and structural strength with the iridium center electrode

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Denso |
| Core Material | Iridium |
| Top Material Type | iridium |
| Vehicle Service Type | UTV |
| Global Trade Identification Number | 00042511047099 |
| UPC | 042511047099 |
| OEM Part Number | DENS7 |
| Manufacturer | Denso |
| Item Weight | 1.92 ounces |
| Product Dimensions | 3.35 x 0.98 x 0.98 inches |
| Item model number | IW20TT |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | IW20TT |

## Product Details

- **Brand:** Denso
- **Core Material:** Iridium
- **Top Material Type:** iridium
- **Vehicle Service Type:** UTV
- **Global Trade Identification Number:** 00042511047099

## Images

![Denso(4709) IW20TT Iridium TT Spark Plug, (Pack of 1) - Image 1](https://m.media-amazon.com/images/I/812UZ3IkwJL.jpg)
![Denso(4709) IW20TT Iridium TT Spark Plug, (Pack of 1) - Image 2](https://m.media-amazon.com/images/I/61KYqBAf6EL.jpg)
![Denso(4709) IW20TT Iridium TT Spark Plug, (Pack of 1) - Image 3](https://m.media-amazon.com/images/I/61shxT8JYxL.jpg)
![Denso(4709) IW20TT Iridium TT Spark Plug, (Pack of 1) - Image 4](https://m.media-amazon.com/images/I/71SwrqSERhL.jpg)
![Denso(4709) IW20TT Iridium TT Spark Plug, (Pack of 1) - 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

### ⭐⭐⭐⭐⭐ Great for a GeneRac GP5500 ...
*by J***E on December 25, 2020*

After using Denso's iridium tt plugs in my truck and van and getting great results. I found a TT plug with the proper reach, thread and heat range for my GeneRac GP5500, Denso (4709) IW20TT Iridium TT. Really easy starting, very stable with varing loads. You will know you are using a TT plug the first instant the engine starts because it sounds slightly different.

### ⭐⭐⭐⭐⭐ Denso TT
*by R***S on October 22, 2020*

All Denson TT plugs are the absolute hands down best...... you will notice a big difference. It gets better and better. It will start burning cleaner...... I now put them in everything.

### ⭐ So Much For Customer Service
*by S***G on April 23, 2016*

I bought a set of top-of-the-line spark plugs for my VW Vanagon as recommended by their website. When I went to install them, I couldn't remove the electrode ends as required to install them on any old VW. I attempted to contact Denso through their website, and have not heard anything for two weeks. I guess spending $29.00 for a set of 4 plugs is not enough to merit a reply. Their contact page didn't list a phone number, but I finally found a phone number of a plant in Ohio, who I will call Monday.

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**Shop now:** [https://www.desertcart.vu/products/42235256-denso-4709-iw20tt-iridium-tt-spark-plug-pack-of-1](https://www.desertcart.vu/products/42235256-denso-4709-iw20tt-iridium-tt-spark-plug-pack-of-1)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-03-04*