---
product_id: 376256326
title: "NGK 6510 LTR7IX-11 Iridium IX Spark Plug"
brand: "ngk"
price: "¥20065"
currency: JPY
in_stock: true
reviews_count: 5
category: "Ngk"
url: https://www.desertcart.jp/products/376256326-ngk-6510-ltr7ix-11-iridium-ix-spark-plug
store_origin: JP
region: Japan
---

# Iridium core for superior ignition 14mm precision thread size OEM-grade durability & reliability NGK 6510 LTR7IX-11 Iridium IX Spark Plug

**Brand:** ngk
**Price:** ¥20065
**Availability:** ✅ In Stock

## Summary

> 🔥 Ignite your ride with NGK’s precision power!

## Quick Answers

- **What is this?** NGK 6510 LTR7IX-11 Iridium IX Spark Plug by ngk
- **How much does it cost?** ¥20065 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/376256326-ngk-6510-ltr7ix-11-iridium-ix-spark-plug)

## 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

- • **Trusted OEM Quality:** Manufactured by NGK, the world’s largest OEM spark plug supplier, guaranteeing top-tier reliability.
- • **Enhanced Longevity & Durability:** Engineered to withstand high temperatures and wear, reducing maintenance frequency and costs.
- • **Iridium Core for Ultimate Ignition:** Advanced iridium material delivers superior spark efficiency and longer lifespan than conventional plugs.
- • **Precision Fit for Peak Performance:** Vehicle-specific 14mm thread ensures seamless installation and optimal engine compatibility.
- • **Optimized for High-Performance Engines:** Proven performance in turbocharged and tuned vehicles, ensuring no misfires even under extreme conditions.

## Overview

The NGK 6510 LTR7IX-11 Iridium IX Spark Plug is a premium OEM-grade ignition component featuring a 14mm thread size and a durable iridium core. Designed for motorcycles and high-performance vehicles, it offers exceptional reliability, longevity, and optimized spark efficiency to enhance engine performance and reduce maintenance intervals.

## Description

Often specified as original equipment, NGK spark plugs are the best combination of performance and longevity. NGK offers the Quality, Reliability and Durability you'd expect from an OEM manufacturer. NGK is the world's largest supplier of OEM spark plugs. It is recommended to research applications on NGK s website prior to purchase to make sure this OEM part fits your vehicle, including engine, drivetrain and quantity needed.

Review: Desastrosas - Desastroso. Son bujías que aparecen como compatibles con mi vehículo. Se han instalado a su par de apriete hace menos de 2.000 kms y siguiendo todos los cuidados necesarios para su correcta instalación. Han resultado nefastas, una de ellas presenta fugas por la cerámica, venían con diferentes distancias de electrodos y lo peor es que han ocasionado la avería asegurada en una de las bobinas (no tengo claro que hayan podido ocasionar daños en las otras 3 bobinas). Todo ello obliga, al necesario cambio de todas las bobinas y de nuevas bujías. Conociendo la marca NGK, dudo mucho que sean originales.
Review: Great quality, best price - Have used these since I purchased my Focus ST and Ecoboost Mustang. I have ran them since stock and tuned. I change spark plugs every 10 k miles. My Focus is big turbo pushing 25 psi on e30 and does not misfire during wot pulls at all. Mustang is stock turbo e30 and no misfires during pulls as well.

## Features

- Often specified as original equipment, NGK spark plugs are the best combination of performance and longevity.
- Offering the Quality, Reliability and Durability You'd Expect from an OEM Manufacturer
- NGK is the world's largest supplier of OEM spark plugs
- Research Applications Prior to Purchase To Make Sure This OEM Part Fits Your Vehicle, Including Engine, Drivetrain and Quantity Needed.
- This Listing is for 4 Spark Plugs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00TD7Q19A |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | 152,607 in Automotive ( See Top 100 in Automotive ) 336 in Motorbike Ignitions |
| Brand | NGK |
| Brand Name | NGK |
| Compatible with Vehicle Type | Motorcycle |
| Core Material | Iridium |
| Core material | Iridium |
| Customer Reviews | 4.7 out of 5 stars 484 Reviews |
| Included Components | 6510 |
| Item Weight | 200 g |
| Manufacturer | NGK |
| Manufacturer Part Number | 6510(4) |
| Model Number | 6510(4) |
| Number of items | 4 |
| OEM Equivalent Part Number | 6510(4) |
| Thread Size | 14 millimeters |
| Thread size | 14 millimeters |
| Top Material Type | Ceramic |
| Top material type | Ceramic |
| UPC | 728040218727 |
| Unit Count | 4.0 count |
| Vehicle service type | Motorcycle |

## Product Details

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

## Images

![NGK 6510 LTR7IX-11 Iridium IX Spark Plug - Image 1](https://m.media-amazon.com/images/I/71ywHcnItkL.jpg)
![NGK 6510 LTR7IX-11 Iridium IX Spark Plug - Image 2](https://m.media-amazon.com/images/I/71QbFMto5pL.jpg)
![NGK 6510 LTR7IX-11 Iridium IX Spark Plug - Image 3](https://m.media-amazon.com/images/I/513J6znIjyL.jpg)
![NGK 6510 LTR7IX-11 Iridium IX Spark Plug - Image 4](https://m.media-amazon.com/images/I/51AC3leR+SL.jpg)
![NGK 6510 LTR7IX-11 Iridium IX Spark Plug - Image 5](https://m.media-amazon.com/images/I/61Vq1X2Ex4L.jpg)

## Questions & Answers

**Q: What's the stock gap size of these?**
A: .043" (1.1mm)

**Q: Do you have silmar8a9s for afrika twin 1000 2016?**
A: We do not currently stock the 90992 NGK spark plug.

**Q: does this fit 2020 mustang ecoboost 2.3L ?**
A: NGK has multiple grades of plugs that may fit your vehicle. We recommend you go to the 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.

**Q: Are these one step colder?**
A: For the focus st they in fact are one step colder.

## Customer Reviews

### ⭐ Desastrosas
*by E***E on 27 December 2025*

Desastroso. Son bujías que aparecen como compatibles con mi vehículo. Se han instalado a su par de apriete hace menos de 2.000 kms y siguiendo todos los cuidados necesarios para su correcta instalación. Han resultado nefastas, una de ellas presenta fugas por la cerámica, venían con diferentes distancias de electrodos y lo peor es que han ocasionado la avería asegurada en una de las bobinas (no tengo claro que hayan podido ocasionar daños en las otras 3 bobinas). Todo ello obliga, al necesario cambio de todas las bobinas y de nuevas bujías. Conociendo la marca NGK, dudo mucho que sean originales.

### ⭐⭐⭐⭐⭐ Great quality, best price
*by A***A on 22 September 2025*

Have used these since I purchased my Focus ST and Ecoboost Mustang. I have ran them since stock and tuned. I change spark plugs every 10 k miles. My Focus is big turbo pushing 25 psi on e30 and does not misfire during wot pulls at all. Mustang is stock turbo e30 and no misfires during pulls as well.

### ⭐⭐⭐⭐⭐ Good
*by A***. on 9 March 2026*

Perfectas para mustang ecoboost, hay que calibrarlas

## Frequently Bought Together

- NGK 6510 LTR7IX-11 Iridium IX Spark Plug (4 Pack)
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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-04*