---
product_id: 18740030
title: "7397 TR5IX Iridium IX Spark Plug, Pack of 4"
brand: "ngk"
price: "$77.17"
currency: USD
in_stock: true
reviews_count: 13
category: "Ngk"
url: https://www.desertcart.us/products/18740030-7397-tr5ix-iridium-ix-spark-plug-pack-of-4
store_origin: US
region: United States of America
---

# Iridium core for superior spark Longer insulator nose reduces fouling Triple gasket seal prevents gas leaks 7397 TR5IX Iridium IX Spark Plug, Pack of 4

**Brand:** ngk
**Price:** $77.17
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** 7397 TR5IX Iridium IX Spark Plug, Pack of 4 by ngk
- **How much does it cost?** $77.17 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/18740030-7397-tr5ix-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

- • **Triple Gasket Seal:** Eliminates combustion gas leakage, ensuring optimal power and engine longevity.
- • **OEM-Trusted Quality:** World’s largest OEM spark plug supplier—guaranteed fit and performance for your vehicle.
- • **Precision Iridium Core:** Delivers consistent, high-energy sparks for peak engine performance and fuel efficiency.
- • **Trivalent Metal Plating:** Superior corrosion and seizing resistance for hassle-free installation and extended durability.
- • **Advanced Anti-Fouling Design:** Longer insulator nose and corrugated ribs prevent misfires and maintain ignition reliability.

## Overview

The NGK 7397 TR5IX Iridium IX Spark Plug pack of 4 features a high-performance iridium core for reliable ignition, a longer insulator nose and corrugated ribs to prevent fouling and flashover, plus a triple gasket seal to eliminate combustion gas leaks. With trivalent metal plating for superior corrosion resistance, these OEM-quality plugs ensure durability and optimal engine efficiency, making them a top choice for professional-grade vehicle maintenance.

## Description

Often specified as original equipment, NGK spark plugs are the best combination of performance and longevity. NGK offers the Quality, Reliability and Durability you'd expect from an OEM manufacturer. NGK is the world's largest supplier of OEM spark plugs. It is recommended to research applications on NGK s website prior to purchase to make sure this OEM part fits your vehicle, including engine, drivetrain and quantity needed.

Review: Works as expected 2005 Chevy Silverado 5.3L - 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: Less Expensive Than Parts Store - Good NGK product, great for Chevy trucks. These would cost almost double what I paid had I bought them at a parts store.

## Features

- NGK Sparkplugs
- Spark plugs
- Longer insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakage
- Trivalent Metal Plating - superior anti-corrosion and anti-seizing properties

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00L3XGGDS |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #279,525 in Automotive ( See Top 100 in Automotive ) #1,731 in Automotive Replacement Spark Plugs |
| Brand | NGK |
| Core Material | Iridium |
| Customer Reviews | 4.7 4.7 out of 5 stars (814) |
| Date First Available | May 22, 2014 |
| Global Trade Identification Number | 00087295073971 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.4 ounces |
| Item model number | 7397-4PK |
| Manufacturer | NGK |
| Manufacturer Part Number | 8M0046007 |
| Model | 7397-4PK |
| OEM Part Number | TR5IX |
| Position | Front, Rear |
| Product Dimensions | 4.1 x 3.5 x 1 inches |
| Thread Size | Thread diameter: 14 mm, Thread length: 17.5 mm |
| Top Material Type | Metal |
| UPC | 087295073971 |
| Vehicle Service Type | Car, Truck |

## Product Details

- **Brand:** NGK
- **Core Material:** Iridium
- **Thread Size:** Thread diameter: 14 mm, Thread length: 17.5 mm
- **Top Material Type:** Metal
- **Vehicle Service Type:** Car, Truck

## Images

![7397 TR5IX Iridium IX Spark Plug, Pack of 4 - Image 1](https://m.media-amazon.com/images/I/71iSVSsw1HL.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

### ⭐⭐⭐⭐⭐ Works as expected 2005 Chevy Silverado 5.3L
*by E***S on March 11, 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.

### ⭐⭐⭐⭐⭐ Less Expensive Than Parts Store
*by S***H on July 21, 2023*

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

### ⭐⭐⭐⭐⭐ Great Value
*by G***A on April 23, 2024*

Bought them for my 2005 Camry, works great, price was good and it shipped in time.

## 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 United States of America*
*Store origin: US*
*Last updated: 2026-03-03*