---
product_id: 471862111
title: "NGK CR9EIX - Iridium IX Spark Plug - 4-Pack/--"
brand: "ngk"
price: "$595309"
currency: COP
in_stock: true
reviews_count: 5
category: "Ngk"
url: https://www.desertcart.co/products/471862111-ngk-cr9eix-iridium-ix-spark-plug-4-pack
store_origin: CO
region: Colombia
---

# Iridium core for max spark efficiency 4-pack for long-lasting performance Direct OEM replacement fit NGK CR9EIX - Iridium IX Spark Plug - 4-Pack/--

**Brand:** ngk
**Price:** $595309
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** NGK CR9EIX - Iridium IX Spark Plug - 4-Pack/-- by ngk
- **How much does it cost?** $595309 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/471862111-ngk-cr9eix-iridium-ix-spark-plug-4-pack)

## 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 the USA:** Crafted with precision in the USA, combining advanced technology with trusted manufacturing standards.
- • **OEM-Grade Fitment:** Seamlessly replace your spark plugs with genuine NGK parts designed to match exact vehicle specifications.
- • **Long-Lasting 4-Pack:** Keep your engine firing strong with a convenient 4-pack, ensuring consistent performance and fewer replacements.
- • **Precision Iridium Core:** Experience superior ignition with NGK’s ultra-durable iridium tip, engineered for optimal spark and fuel efficiency.
- • **Trusted Quality & Reliability:** Backed by a 4.8-star rating from 450+ users, NGK guarantees premium performance you can count on.

## Overview

The NGK CR9EIX Iridium IX Spark Plug 4-pack offers professional-grade ignition performance with a durable iridium core, ensuring efficient fuel combustion and reliable engine starts. Designed as a direct OEM replacement, these spark plugs fit perfectly and are made in the USA, trusted by thousands of satisfied customers for enhanced vehicle performance and longevity.

## Description

Genuine 4 pack NGK Iridium IX 3521 Spark Plug

Review: Good item would buy again
Review: They Look good ngk quality plugs

## Features

- 4 pack NGK Iridium IX 3521 Spark Plug
- Genuine NGK Parts
- Includes original packaging and hardware
- Direct replacement auto parts
- Confirm vehicle fitment with desertcart Confirmed Fit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004SKYAWM |
| Brand | NGK |
| Core Material | Iridium |
| Country of Origin | USA |
| Customer Reviews | 4.8 4.8 out of 5 stars (452) |
| Date First Available | 16 July 2021 |
| Item Dimensions LxWxH | 8.4 x 2.4 x 8.4 Centimeters |
| Item Weight | 127 g |
| Item model number | 3521 |
| Manufacturer | NGK |
| Manufacturer Part Number | CR9EIX |
| Model | 4 pack NGK Iridium IX 3521 Spark Plug |
| OEM Part Number | 7085731 |
| Position | Front, Rear |
| Product Dimensions | 8.41 x 2.39 x 8.43 cm; 127.01 g |
| Thread Size | 10mm |
| Top Material Type | Iridium |
| Vehicle Service Type | Car |

## Product Details

- **Brand:** NGK
- **Core Material:** Iridium
- **Thread Size:** 10mm
- **Top Material Type:** Iridium
- **Vehicle Service Type:** Car

## Images

![NGK CR9EIX - Iridium IX Spark Plug - 4-Pack/-- - Image 1](https://m.media-amazon.com/images/I/31dHWUIBdvL.jpg)
![NGK CR9EIX - Iridium IX Spark Plug - 4-Pack/-- - Image 2](https://m.media-amazon.com/images/I/31v-tc4EjJL.jpg)
![NGK CR9EIX - Iridium IX Spark Plug - 4-Pack/-- - Image 3](https://m.media-amazon.com/images/I/41IJ+T7JypL.jpg)
![NGK CR9EIX - Iridium IX Spark Plug - 4-Pack/-- - Image 4](https://m.media-amazon.com/images/I/41JDczL6csL.jpg)
![NGK CR9EIX - Iridium IX Spark Plug - 4-Pack/-- - Image 5](https://m.media-amazon.com/images/I/41KwLpHzrpL.jpg)

## Questions & Answers

**Q: Are these ngk 3521 cr9eix iridium ix spark plugs?**
A: These are correct and they perform flawlessly! Ron

**Q: Will these fit a 2019 polaris rzr turbo s**
A: To be safe: check with dealer or a cross reference app to be sure. Ron

**Q: Will this work on my Harley Davidson 2018 street glide special?**
A: I have a 2017 Road King with the Milwaukee 8 and this is the one it calls for.

**Q: Are these the right iridium plugs for an Indian scout 60?**
A: NGK has multiple grades of plugs that may fit your engine.  
It is recommended to go to NGK site at
https://ngksparkplugs.com/en/part-finder to verify the applications that will fit your engine.
This site will show you all of the available plugs to fit your engine and will also show you which grade plug is recommended for the best performance of your specific engine.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by S***T on 23 August 2024*

Good item would buy again

### ⭐⭐⭐⭐⭐ Review
*by R***R on 30 November 2025*

They Look good ngk quality plugs

### ⭐⭐⭐⭐⭐ Review
*by D***. on 2 December 2025*

Great price for these quality spark plugs. My bike is running better!

## Frequently Bought Together

- NGK CR9EIX - Iridium IX Spark Plug - 4-Pack/--
- K&N Motorcycle Oil Filter: High Performance, Premium, Designed to be used with Synthetic or Conventional Oils, Wrench Off Nut: Fits Select Suzuki Motorcycles, KN-138
- K&N Engine Air Filter: High Performance, Premium, Powersport Air Filter: Fits 2006-2010 SUZUKI (GSXR600, GSXR750) SU-7506

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**Shop now:** [https://www.desertcart.co/products/471862111-ngk-cr9eix-iridium-ix-spark-plug-4-pack](https://www.desertcart.co/products/471862111-ngk-cr9eix-iridium-ix-spark-plug-4-pack)

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*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-01-24*