---
product_id: 77065977
title: "NGK (7397-4PK) TR5IX Iridium IX Spark Plug, (Box of 4)"
brand: "ngk"
price: "€ 96.37"
currency: EUR
in_stock: true
reviews_count: 5
category: "Ngk"
url: https://www.desertcart.sk/products/77065977-ngk-7397-4pk-tr5ix-iridium-ix-spark-plug-box-4
store_origin: SK
region: Slovakia
---

# 0.6mm Iridium fine tip for stable spark High melting point Iridium alloy for heat durability Triple gasket seal prevents combustion gas leaks NGK (7397-4PK) TR5IX Iridium IX Spark Plug, (Box of 4)

**Brand:** ngk
**Price:** € 96.37
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** NGK (7397-4PK) TR5IX Iridium IX Spark Plug, (Box of 4) by ngk
- **How much does it cost?** € 96.37 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/77065977-ngk-7397-4pk-tr5ix-iridium-ix-spark-plug-box-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

- • **Sealed for Reliability:** Triple gasket seal and trivalent metal plating provide superior anti-corrosion and anti-seizing protection—peace of mind in every drive.
- • **Precision Ignition Power:** Laser-welded 0.6mm Iridium tip delivers extreme ignitability and consistent spark stability for peak engine performance.
- • **Durability Meets Endurance:** Iridium alloy’s ultra-high melting point resists heat and electrical wear, built to last through high-performance demands.
- • **Enhanced Throttle Response:** Optimized electrode design minimizes quenching effect, ensuring quicker and smoother acceleration every time.
- • **Fouling & Flashover Defense:** Longer insulator nose plus corrugated ribs prevent fouling and flashover, keeping your engine running clean and efficient.

## Overview

The NGK TR5IX Iridium IX Spark Plug (4-pack) is engineered for performance enthusiasts seeking extreme ignitability and durability. Featuring a 0.6mm laser-welded Iridium tip, tapered ground electrode, and triple gasket seal, it ensures stable sparks, improved throttle response, and prevents fouling and combustion gas leaks. Its high melting point alloy and anti-corrosion plating make it ideal for high-performance engines, delivering reliable, long-lasting ignition.

## Description

Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti 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 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 - superior anti-corrosion and anti-seizing properties.

Review: Found the ones I needed on desertcart at a decent price. Brand is highly recommended. Don't know how much overall performance improvement I'm getting but it's good to know I have one of the best plugs available. They were installed in a 2010 Ford Escape with leaky valve cover gaskets. Replaced the gaskets and I should have peace of mind for many years. Free delivery definitely made a difference in buying from desertcart rather than from other on-line sellers.
Review: This is a review for : NGK (7397-4PK) TR5IX Iridium IX Spark Plug, (Box of 4) I installed these today to replace the original factory AC Delco platinum plugs that have 164K miles on them. This is for a 2005 Chevy Silverado 5.3L. The plugs fit and were easy enough to install. I did check the gap to be sure they were all 0.40. Not one was missing or broken. I applied the anti seize lubricant. I then hand tightened using this: GearWrench 80546 5/8-Inch x 6-Inch Swivel Spark Plug Socket Actually used it to remove the old plugs too. I used a torque wrench to 10 foot-pounds (range is 7-14.5 foot pounds for these). I used some Taylor wires which look nice the the jury is out due to fit and degree of difficulty to get those on. Time will tell if these will last. Since my factory plugs were still running fine with absolutely no carbon build up (no need to soak in PB Blaster as I had feared), it was really easy to get those off. The truck idled nicely then and about the same with these. The real test will be in two weeks when I drag my 6000 pound travel trailer out of storage and go camping. If anything changes for the worse, I'll update. If these continue to run fine, then I won't. NGK packages these in the individual boxes and all four into bigger box. But a nice touch is a small cardboard tube going over the threads to protect them from possible damage in shipping. Never seen that before. nice.

## Features

- Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti 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 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 - superior anti-corrosion and anti-seizing properties

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00L3XGGDS |
| Best Sellers Rank | 86,749 in Automotive ( See Top 100 in Automotive ) 401 in Car Spark Plugs |
| Brand | NGK |
| Customer Reviews | 4.7 4.7 out of 5 stars (773) |
| Date First Available | 15 Aug. 2010 |
| Item Weight | 68 g |
| Item model number | 7397-4PK |
| Manufacturer | NGK |
| Manufacturer part number | 8M0046007 |
| Model | 7397-4PK |
| OEM Part Number | TR5IX |
| Position | Front, Rear |
| Product Dimensions | 10.41 x 8.89 x 2.54 cm; 68.04 g |

## Product Details

- **Brand:** NGK
- **Core material:** Iridium
- **Thread size:** M14x1.25
- **Top material type:** Metal
- **Vehicle service type:** Car

## Images

![NGK (7397-4PK) TR5IX Iridium IX Spark Plug, (Box of 4) - Image 1](https://m.media-amazon.com/images/I/71iSVSsw1HL.jpg)
![NGK (7397-4PK) TR5IX Iridium IX Spark Plug, (Box of 4) - Image 2](https://m.media-amazon.com/images/I/41PhgdPZSBL.jpg)

## Available Options

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

## Questions & Answers

**Q: Will these fit my 95 ford thunderbird 4.6l sohc v8 ?**
A: No this listing is compatible for 1983-1988 Ford Thunderbird. Thank you.

**Q: Are the terminal nuts removable?**
A: On the spark plug itself? No. Unless you break them off but i wouldn't suggest that lol

**Q: Will these fit 2011 camry le**
A: The best way to determine fit for these or any other plug is to go to the NGK website and verify fit on their fitment chart

**Q: what spark plug i use in my bike ducati diavel carbon 2013 and my ducati multiestrada 2014? thanks**
A: The best bet is to check the ngk website to verify fitment especially on a bike since the wrong plug may reach too far into the combustion chamber and cause damage

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***R on 5 March 2022*

Found the ones I needed on Amazon at a decent price. Brand is highly recommended. Don't know how much overall performance improvement I'm getting but it's good to know I have one of the best plugs available. They were installed in a 2010 Ford Escape with leaky valve cover gaskets. Replaced the gaskets and I should have peace of mind for many years. Free delivery definitely made a difference in buying from Amazon rather than from other on-line sellers.

### ⭐⭐⭐⭐⭐ Review
*by E***S on 11 March 2017*

This is a review for : NGK (7397-4PK) TR5IX Iridium IX Spark Plug, (Box of 4) I installed these today to replace the original factory AC Delco platinum plugs that have 164K miles on them. This is for a 2005 Chevy Silverado 5.3L. The plugs fit and were easy enough to install. I did check the gap to be sure they were all 0.40. Not one was missing or broken. I applied the anti seize lubricant. I then hand tightened using this: GearWrench 80546 5/8-Inch x 6-Inch Swivel Spark Plug Socket Actually used it to remove the old plugs too. I used a torque wrench to 10 foot-pounds (range is 7-14.5 foot pounds for these). I used some Taylor wires which look nice the the jury is out due to fit and degree of difficulty to get those on. Time will tell if these will last. Since my factory plugs were still running fine with absolutely no carbon build up (no need to soak in PB Blaster as I had feared), it was really easy to get those off. The truck idled nicely then and about the same with these. The real test will be in two weeks when I drag my 6000 pound travel trailer out of storage and go camping. If anything changes for the worse, I'll update. If these continue to run fine, then I won't. NGK packages these in the individual boxes and all four into bigger box. But a nice touch is a small cardboard tube going over the threads to protect them from possible damage in shipping. Never seen that before. nice.

### ⭐⭐⭐⭐⭐ Review
*by S***H on 21 July 2023*

Good NGK product, great for Chevy trucks. These would cost almost double what I paid had I bought them at a parts store.

## Frequently Bought Together

- NGK 7397 TR5IX Iridium IX Spark Plug, Pack of 4
- JDMSPEED High Performance Spark Plug Ignition Wire for 2000-2009 Chevy GMC V8
- NGK 7397 Spark Plug

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-03*