---
product_id: 384427340
title: "6441 ZFR6FIX-11 Iridium IX Spark Plug, Pack of 4"
brand: "ngk"
price: "฿7431"
currency: THB
in_stock: true
url: https://www.desertcart.co.th/products/384427340-6441-zfr6fix-11-iridium-ix-spark-plug-pack-of-4
store_origin: TH
region: Thailand
---

# 0.6mm Iridium tip for stable spark High melting point for extreme durability Triple gasket seal prevents gas leaks 6441 ZFR6FIX-11 Iridium IX Spark Plug, Pack of 4

**Brand:** ngk
**Price:** ฿7431
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite your ride with precision and power!

## Quick Answers

- **What is this?** 6441 ZFR6FIX-11 Iridium IX Spark Plug, Pack of 4 by ngk
- **How much does it cost?** ฿7431 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/384427340-6441-zfr6fix-11-iridium-ix-spark-plug-pack-of-4)

## 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

- • **Endurance Under Fire:** Iridium alloy’s ultra-high melting point ensures long-lasting durability against heat and electrical wear—built for the high-performance enthusiast.
- • **Leak-Proof Efficiency:** Triple gasket seal and corrugated insulator ribs eliminate combustion gas leakage and flashover, maximizing engine efficiency.
- • **Throttle-Ready Response:** Optimized tapered ground electrode minimizes quenching effect, enhancing throttle response and acceleration.
- • **Precision Ignition Power:** Laser-welded 0.6mm iridium tip delivers unmatched spark stability and extreme ignitability for peak engine performance.
- • **Corrosion & Seize Resistance:** Trivalent metal plating protects against corrosion and seizing, guaranteeing hassle-free maintenance and longevity.

## Overview

The NGK 6441 ZFR6FIX-11 Iridium IX Spark Plug pack of 4 is engineered for performance-driven vehicles, featuring a laser-welded 0.6mm iridium tip for superior ignitability, a high melting point alloy for durability, and advanced sealing technology to prevent combustion leaks. Ideal for snowmobiles, UTVs, vans, and watercraft, it ensures enhanced throttle response, corrosion resistance, and long-lasting reliability.

## Description

NGK 6441 ZFR6FIX-11 Iridium IX Spark Plug, Pack of 4

## Features

- Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling
- The 0.6 millimeter laser welded fine Iridium tip ensures high durability and a consistently stable spark and the tapered ground electrode minimizes electrical quenching effect
- Longer insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakage
- Iridium alloy has extremely high melting point, giving it high durability to heat and electrical wear, perfect for today's high performance engines
- Trivalent Metal Plating provides superior anti-corrosion and anti-seizing properties; Part number of spark plug inside the box: ZFR6FIX-11

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | NGK |
| Core Material | Iridium |
| Thread Size | 14mm x 19mm |
| Top Material Type | Metal |
| Vehicle Service Type | Snowmobile, UTV, Van, Watercraft |
| Global Trade Identification Number | 00087295064412 |
| UPC | 087295064412 |
| Manufacturer | NGK |
| Model | FBA_6441 |
| Product Dimensions | 2.26 x 8.71 x 2.49 cm; 0.28 g |
| Item model number | 6441-4PK |
| Manufacturer Part Number | 6441-4PK |
| Position | Front, Rear |
| Assembly Required | No |
| Manufacturer | NGK |
| Country of Origin | USA |
| Item Weight | 0.28 g |

## Product Details

- **Brand:** NGK
- **Core Material:** Iridium
- **Thread Size:** 14mm x 19mm
- **Top Material Type:** Metal
- **Vehicle Service Type:** Snowmobile, UTV, Van, Watercraft

## Images

![6441 ZFR6FIX-11 Iridium IX Spark Plug, Pack of 4 - Image 1](https://m.media-amazon.com/images/I/6118BQEsyYL.jpg)

## Frequently Bought Together

- NGK 6441 ZFR6FIX-11 Iridium IX Spark Plug, Pack of 4
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**Shop now:** [https://www.desertcart.co.th/products/384427340-6441-zfr6fix-11-iridium-ix-spark-plug-pack-of-4](https://www.desertcart.co.th/products/384427340-6441-zfr6fix-11-iridium-ix-spark-plug-pack-of-4)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-03-03*