---
product_id: 230959369
title: "NGK # 6509 Iridium Spark Plug LTR6IX-11 - 6 PCSNEW"
brand: "ngk"
price: "€ 173.43"
currency: EUR
in_stock: true
reviews_count: 6
category: "Ngk"
url: https://www.desertcart.ie/products/230959369-ngk-6509-iridium-spark-plug-ltr6ix-11-6-pcsnew
store_origin: IE
region: Ireland
---

# Iridium tech for max spark Pre-gapped for instant install Pack of 6 for full engine refresh NGK # 6509 Iridium Spark Plug LTR6IX-11 - 6 PCSNEW

**Brand:** ngk
**Price:** € 173.43
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite your drive with NGK Iridium – where power meets precision!

## Quick Answers

- **What is this?** NGK # 6509 Iridium Spark Plug LTR6IX-11 - 6 PCSNEW by ngk
- **How much does it cost?** € 173.43 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/230959369-ngk-6509-iridium-spark-plug-ltr6ix-11-6-pcsnew)

## Best For

- ngk enthusiasts

## Why This Product

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

## Key Features

- • **Complete Engine Upgrade:** Six-pack bundle lets you replace all plugs at once, maximizing engine smoothness and power.
- • **Trusted Brand Reliability:** NGK’s global reputation guarantees durability and consistent performance across all driving conditions.
- • **Rapid International Delivery:** Fast shipping from US to UK and beyond means you’re back on the road with no downtime.
- • **Ready-to-Install Convenience:** Pre-gapped plugs eliminate guesswork and save time, ensuring a perfect fit right out of the box.
- • **Precision Iridium Performance:** Experience superior ignition with NGK's cutting-edge iridium spark plugs, engineered for optimal combustion and fuel efficiency.

## Overview

The NGK #6509 Iridium Spark Plug LTR6IX-11 comes in a convenient 6-piece pack, featuring pre-gapped iridium electrodes for enhanced ignition performance and fuel efficiency. Weighing just 299g and designed for center engine positions, these plugs are trusted worldwide for durability and quick installation, backed by a stellar 4.7-star rating from over 2,300 users.

## Description

Sold in packs of 6.

Review: They work great - Great quality spark plugs. Just fitted them to my 2014 3.7 V6 Mustang. Runs fine with no issues. No need to gap them as they're per gaped. Bought via a US seller and arrived in the UK very quickly.
Review: Funcionaron muy bien.

## Features

- Better Performance
- Good Brand Name NGK
- Iridium
- 1order = 6 Pieces
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00J62NNAC |
| Brand | NGK |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,357) |
| Date First Available | 22 Mar. 2014 |
| Item Weight | 299 g |
| Item model number | LTR6IX-11 |
| Manufacturer | NGK |
| Manufacturer part number | 6509 |
| Position | Centre |
| Product Dimensions | 9.4 x 2.39 x 12.65 cm; 299.37 g |

## Product Details

- **Brand:** NGK
- **Core material:** Iridium
- **Thread size:** 14mm
- **Top material type:** Iridium
- **Vehicle service type:** Motorcycle

## Images

![NGK # 6509 Iridium Spark Plug LTR6IX-11 - 6 PCSNEW - Image 1](https://m.media-amazon.com/images/I/619zkWbYNZL.jpg)

## Questions & Answers

**Q: Are these genuine NGK plugs**
A: Yes they are. Put them in a 2012 Cadillac. Car is still running just fine.

**Q: Gap was .041, spark plug off my 2011 Mustang V6 were 0.050, why the difference?**
A: Most all plugs come new at around .038. they have to be gapped according to specs by the engine manufacturer. Worn plugs will have a wider gap due to deteriorated metal and heat.

**Q: Has anyone tried this on a lincoln mkx?**
A: must be applied by engine size not car model

**Q: Is it fit Volkswagen Tiguan 2.0 tsi**
A: NGK has multiple grades of plugs that may fit your vehicle.  
It is recommended to go to NGK site at   https://ngksparkplugs.com/en/part-finder    to verify the applications that will fit your vehicle.
This site will show you all of the available plugs to fit your vehicle and will also show you which grade plug is recommended for the best performance of your specific engine.

## Customer Reviews

### ⭐⭐⭐⭐⭐ They work great
*by J***N on 17 March 2022*

Great quality spark plugs. Just fitted them to my 2014 3.7 V6 Mustang. Runs fine with no issues. No need to gap them as they're per gaped. Bought via a US seller and arrived in the UK very quickly.

### ⭐⭐⭐⭐⭐ Review
*by N***. on 10 October 2025*

Funcionaron muy bien.

### ⭐⭐⭐⭐⭐ Review
*by M***Z on 22 December 2025*

These spark plugs are definitely functional and their performance is marvelous. Did not have any issues

## Frequently Bought Together

- NGK # 6509 Iridium Spark Plug LTR6IX-11 - 6 PCSNEW
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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-04*