---
product_id: 391198433
title: "# 6509 Iridium Spark Plug LTR6IX-11 - 6 PCSNEW"
brand: "ngk"
price: "997 Lei"
currency: RON
in_stock: true
reviews_count: 5
url: https://www.desertcart.ro/products/391198433-6509-iridium-spark-plug-ltr6ix-11-6-pcsnew
store_origin: RO
region: Romania
---

# Pack of 6 for seamless replacements 14mm precision thread size Iridium core for max durability # 6509 Iridium Spark Plug LTR6IX-11 - 6 PCSNEW

**Brand:** ngk
**Price:** 997 Lei
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite Performance, Drive with Confidence!

## Quick Answers

- **What is this?** # 6509 Iridium Spark Plug LTR6IX-11 - 6 PCSNEW by ngk
- **How much does it cost?** 997 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/391198433-6509-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

- • **Made in USA:** Proudly crafted in the USA, combining quality and performance you can trust.
- • **Precision Fit:** 14mm thread size guarantees perfect compatibility with your vehicle’s engine.
- • **Trusted Brand:** Manufactured by NGK, a global leader in spark plug technology and reliability.
- • **Bulk Value Pack:** Sold in convenient packs of 6 to keep your ride running smooth without frequent reorders.
- • **Unmatched Longevity:** Iridium tip ensures superior wear resistance and longer engine life.

## Overview

The NGK #6509 Iridium Spark Plug LTR6IX-11 is a premium 14mm threaded spark plug featuring a durable iridium core for enhanced engine efficiency and longevity. Sold in packs of six, it offers excellent value and reliable performance, manufactured by NGK in the USA for professional-grade vehicle maintenance.

## Description

Sold in packs of 6.

Review: 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

- Sold in packs of 6

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | NGK |
| Core Material | Iridium |
| Thread Size | 14mm |
| Top Material Type | Iridium |
| Vehicle Service Type | Car |
| UPC | 087295065099 |
| Manufacturer | NGK |
| Product Dimensions | 9.4 x 2.39 x 12.65 cm; 299.37 g |
| Item model number | LTR6IX-11 |
| Manufacturer Part Number | 6509 |
| Position | Center |
| Manufacturer | NGK |
| Country of Origin | USA |
| Item Weight | 299 g |

## Product Details

- **Brand:** NGK
- **Core Material:** Iridium
- **Thread Size:** 14mm
- **Top Material Type:** Iridium
- **Vehicle Service Type:** Car

## Images

![# 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

### ⭐⭐⭐⭐⭐ Review
*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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**Shop now:** [https://www.desertcart.ro/products/391198433-6509-iridium-spark-plug-ltr6ix-11-6-pcsnew](https://www.desertcart.ro/products/391198433-6509-iridium-spark-plug-ltr6ix-11-6-pcsnew)

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-21*