---
product_id: 261588335
title: "NGK 6441 ZFR6FIX-11 Iridium IX Spark Plug, Pack of 4"
brand: "ngk"
price: "S$113"
currency: SGD
in_stock: true
reviews_count: 5
category: "Ngk"
url: https://www.desertcart.sg/products/261588335-ngk-6441-zfr6fix-11-iridium-ix-spark-plug-pack-4
store_origin: SG
region: Singapore
---

# 0.6mm laser-welded iridium tip for stable spark High melting point iridium alloy for extreme durability Triple gasket seal to eliminate combustion gas leaks NGK 6441 ZFR6FIX-11 Iridium IX Spark Plug, Pack of 4

**Brand:** ngk
**Price:** S$113
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** NGK 6441 ZFR6FIX-11 Iridium IX Spark Plug, Pack of 4 by ngk
- **How much does it cost?** S$113 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/261588335-ngk-6441-zfr6fix-11-iridium-ix-spark-plug-pack-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

- • **Fouling Fighter:** Longer insulator nose and corrugated ribs prevent fouling and flashover, keeping your engine running clean and smooth.
- • **Endurance Engineered:** Built to withstand intense heat and wear, thanks to the high melting point iridium alloy—your engine’s ultimate ally.
- • **Leak-Proof Performance:** Triple gasket seal technology ensures zero combustion gas leakage, maximizing power and efficiency.
- • **Precision Ignition Mastery:** Experience lightning-fast starts and razor-sharp throttle response with the ultra-fine 0.6mm iridium tip.
- • **Corrosion-Resistant Champion:** Trivalent metal plating guards against corrosion and seizing, extending spark plug life and reliability.

## Overview

The NGK 6441 ZFR6FIX-11 Iridium IX Spark Plug pack of 4 is engineered for performance enthusiasts seeking extreme ignitability and durability. Featuring a laser-welded 0.6mm iridium tip, tapered ground electrode, and triple gasket seal, it delivers stable sparks, improved throttle response, and prevents combustion gas leaks. Its high melting point iridium alloy and corrosion-resistant plating ensure long-lasting reliability in high-performance engines.

## Description

Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior fouling. The 0.6mm 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 avoids fouling, the corrugated ribs on insulator avoids 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 has superior corrosion and seizing properties.

Review: Good but all of them needed to be re-gapped. Checked on multiple gauges and calipers. all 4 of them were too closely gapped. Description said it was pre-gapped .044" more like .036"
Review: Excelente producto, muy recomendable

## Features

- Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior 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 avoid fouling, the corrugated ribs on insulator avoid 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 corrosion and seizing properties; Part number of spark plug inside the box: ZFR6FIX-11

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00CC0E6GA |
| Best Sellers Rank | #121,949 in Automotive ( See Top 100 in Automotive ) #802 in Automotive Performance Spark Plugs |
| Brand | NGK |
| Customer Reviews | 4.8 4.8 out of 5 stars (813) |
| Date First Available | 18 February 2014 |
| Exterior | Machined |
| Item Weight | 0.28 g |
| Item model number | 6441-4PK |
| Manufacturer | NGK |
| Manufacturer Part Number | 6441-4PK |
| Model | FBA_6441 |
| Position | Front, Rear |
| Product Dimensions | 2.26 x 8.71 x 2.49 cm; 0.28 g |

## Product Details

- **Brand:** NGK
- **Core material:** Iridium
- **Thread size:** M10x1.0 or M12x1.25
- **Top material type:** Metal
- **Vehicle service type:** Car, Truck, Motorcycle, etc.

## Images

![NGK 6441 ZFR6FIX-11 Iridium IX Spark Plug, Pack of 4 - Image 1](https://m.media-amazon.com/images/I/81lMBJ-5KgL.jpg)
![NGK 6441 ZFR6FIX-11 Iridium IX Spark Plug, Pack of 4 - Image 2](https://m.media-amazon.com/images/I/81j6VztQB8L.jpg)
![NGK 6441 ZFR6FIX-11 Iridium IX Spark Plug, Pack of 4 - Image 3](https://m.media-amazon.com/images/I/71UT4tYQitL.jpg)
![NGK 6441 ZFR6FIX-11 Iridium IX Spark Plug, Pack of 4 - Image 4](https://m.media-amazon.com/images/I/61pRw94V5LL.jpg)

## Available Options

This product comes in different **Number Of Items** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by H***N on 5 January 2024*

Good but all of them needed to be re-gapped. Checked on multiple gauges and calipers. all 4 of them were too closely gapped. Description said it was pre-gapped .044" more like .036"

### ⭐⭐⭐⭐⭐ Review
*by J***Z on 30 December 2025*

Excelente producto, muy recomendable

### ⭐⭐⭐⭐⭐ Review
*by C***N on 14 April 2019*

conforme vraies bougies NGK. pour ceux qui se posent la question, il existe des contrefacons NGK; celles ci ne le sont pas, elles sont arrivés rapidement, parfait état. Sur honda accord 2.0i es 147cv année 1999, zfr6fix-11 parfait, meilleur ralenti, plus doux, plus réactive, je sens une petite différence. Le gap est juste en dessous de 1.1mm, ce qui est recommandé pour ce modèle de véhicule et ces bougies: donc pas eu à retoucher quoique ce soit. n'hésitez pas, ce vendeur est sérieux, les bougies sont de qualité. je partage cela pour les prochains qui passent après moi, ca peut aider. cordialement

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- NGK 6441 ZFR6FIX-11 Iridium IX Spark Plug, Pack of 4
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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-03-20*