---
product_id: 88466429
title: "LKAR6AIX-11 Iridium IX Spark Plug (91187 Iridium Ix), 4 Pack"
brand: "ngk"
price: "$73.34"
currency: USD
in_stock: true
reviews_count: 13
category: "Ngk"
url: https://www.desertcart.us/products/88466429-lkar6aix-11-iridium-ix-spark-plug-91187-iridium-ix-4
store_origin: US
region: United States of America
---

# 0.6mm Iridium fine tip for stable spark High melting point for extreme heat durability Triple gasket seal prevents gas leakage LKAR6AIX-11 Iridium IX Spark Plug (91187 Iridium Ix), 4 Pack

**Brand:** ngk
**Price:** $73.34
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** LKAR6AIX-11 Iridium IX Spark Plug (91187 Iridium Ix), 4 Pack by ngk
- **How much does it cost?** $73.34 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/88466429-lkar6aix-11-iridium-ix-spark-plug-91187-iridium-ix-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

- • **Leak-Proof Combustion:** Triple gasket seal and corrugated insulator ribs eliminate combustion gas leaks and flashover.
- • **Throttle Response Boost:** Optimized electrode design minimizes quenching effect for sharper, faster acceleration.
- • **Precision Ignition Power:** Laser-welded 0.6mm iridium tip delivers unmatched spark consistency for peak engine performance.
- • **Heat-Resistant Durability:** Iridium alloy withstands extreme temperatures, ensuring longevity in high-performance engines.
- • **Corrosion & Seize Protection:** Trivalent metal plating guards against rust and seizing, reducing maintenance downtime.

## Overview

The NGK LKAR6AIX-11 Iridium IX Spark Plug 4-pack 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 ensures stable sparks, prevents fouling, and eliminates combustion gas leaks. Its high melting point iridium alloy and trivalent metal plating provide superior heat resistance and corrosion protection, making it ideal for modern high-performance engines.

## Description

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 prevent 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 - superior anti-corrosion and anti-seizing properties.

Review: Top Spark Plug Choice for My 2013 Nissan Sentra SV - I recently grabbed a 4-pack of NGK LKAR6AIX-11 Iridium IX Spark Plugs for my 2013 Nissan Sentra SV, and I'm absolutely stoked about it. These spark plugs slid right into my car like they were made for it, and ever since I put 'em in, my car's been running like a champ – not a single hiccup to report. My decision to change the plugs came from a recommendation by the mechanic at the car showroom. I didn't fancy forking out over $350 to the service center for what turned out to be a pretty straightforward job. But what's really ripper about this purchase is the price. Snagging a set of four branded spark plugs at such a fair dinkum rate is an absolute steal. I'm chuffed with this product, and it's given my car a real performance boost. I reckon anyone after a reliable and budget-friendly solution should give these spark plugs a burl. G'day!
Review: 2012 Nissan Altima 2.5S Spark Plugs - These are awesome spark plugs. I used Autolite brand spark plugs and they were okay. I changed them after having them for 35k miles think they were causing my engine vibration. It turns out my aftermarket ignition coils were the culprit. I bought these because I wanted the OEM spark plugs since they were better after trying the Autolite spark plugs with the new OEM Hitachi ignition coils. The NGK gave better performance. I was happy to get them at this price. Usually they are more expensive.

## 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07FP438JV |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #28,227 in Automotive ( See Top 100 in Automotive ) #155 in Automotive Replacement Spark Plugs |
| Brand | NGK |
| Core Material | Iridium |
| Customer Reviews | 4.8 4.8 out of 5 stars (1,681) |
| Date First Available | July 17, 2018 |
| Global Trade Identification Number | 00087295811870 |
| Item Weight | 5.9 ounces |
| Item model number | LKAR6AIX-11 |
| Manufacturer | NGK |
| Manufacturer Part Number | LKAR6AIX-11 |
| Model | 4 pack NGK Iridium IX 91187 Spark Plug |
| Position | Front, Rear |
| Product Dimensions | 5.83 x 4 x 1 inches |
| Thread Size | 14mm |
| Top Material Type | Metal |
| UPC | 087295811870 |
| Vehicle Service Type | Car, Truck |

## Product Details

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

## Images

![LKAR6AIX-11 Iridium IX Spark Plug (91187 Iridium Ix), 4 Pack - Image 1](https://m.media-amazon.com/images/I/71gXB9P6XSL.jpg)

## Questions & Answers

**Q: Are these plugs pre-gapped ?**
A: They should be. THOUGH, and I stress, it wouldn't hurt to check them prior to installing them. I've purchased pre-gapped plugs before and they were off just a bit. 39 vs 44 as an example.

**Q: What is the expected milage for these?**
A: 40-50k miles (more expensive OE 9029 are rated 80-100k miles).  Ref. ngksparkplugsdotcom

**Q: Are these 5/8 spark plugs?**
A: These sparkplugs  are 14mm or 9/16. Socket fits snug with either one you wish to go with . Strongly suggest the magnetic spark plug socket .

**Q: Will this fit a 2015 Nissan rouge sv?**
A: Amazon site should tell if they fit.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Top Spark Plug Choice for My 2013 Nissan Sentra SV
*by S***Y on October 19, 2023*

I recently grabbed a 4-pack of NGK LKAR6AIX-11 Iridium IX Spark Plugs for my 2013 Nissan Sentra SV, and I'm absolutely stoked about it. These spark plugs slid right into my car like they were made for it, and ever since I put 'em in, my car's been running like a champ – not a single hiccup to report. My decision to change the plugs came from a recommendation by the mechanic at the car showroom. I didn't fancy forking out over $350 to the service center for what turned out to be a pretty straightforward job. But what's really ripper about this purchase is the price. Snagging a set of four branded spark plugs at such a fair dinkum rate is an absolute steal. I'm chuffed with this product, and it's given my car a real performance boost. I reckon anyone after a reliable and budget-friendly solution should give these spark plugs a burl. G'day!

### ⭐⭐⭐⭐⭐ 2012 Nissan Altima 2.5S Spark Plugs
*by M***A on September 21, 2024*

These are awesome spark plugs. I used Autolite brand spark plugs and they were okay. I changed them after having them for 35k miles think they were causing my engine vibration. It turns out my aftermarket ignition coils were the culprit. I bought these because I wanted the OEM spark plugs since they were better after trying the Autolite spark plugs with the new OEM Hitachi ignition coils. The NGK gave better performance. I was happy to get them at this price. Usually they are more expensive.

### ⭐⭐⭐⭐⭐ Plug me in
*by A***E on January 25, 2024*

I'm not mechanically inclined so, I took a small survey about what kind of spark plugs to purchase for my 2008 Nissan Altima...NGK brand got the best reviews. Apparently they come pre-gapped (whatever that means) and are guaranteed for a perfect fit for your vehicle. All that I know and what really matters is... my car starts up without issues. I'm a Amazon Prime member...of course, I had next-day delivery. Which made the process that much easier.

## Frequently Bought Together

- NGK LKAR6AIX-11 Iridium IX Spark Plug (91187 Iridium Ix), 4 Pack
- FEL-PRO MS 97038 Intake Manifold Gasket Set
- Hitachi IGC0002 Ignition Coil

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-15*