---
product_id: 62960192
title: "Autolite HT15-4PK Platinum High Thread Spark Plug, Pack of 4"
brand: "autolite iridium ultra"
price: "C$3171"
currency: NIO
in_stock: true
reviews_count: 8
url: https://www.desertcart.ni/products/62960192-autolite-ht15-4pk-platinum-high-thread-spark-plug-pack-4
store_origin: NI
region: Nicaragua
---

# Platinum fine wire tip for max ignition Improved horsepower & fuel efficiency OE design for durability & perfect fit Autolite HT15-4PK Platinum High Thread Spark Plug, Pack of 4

**Brand:** autolite iridium ultra
**Price:** C$3171
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite your drive with precision power and unmatched efficiency!

## Quick Answers

- **What is this?** Autolite HT15-4PK Platinum High Thread Spark Plug, Pack of 4 by autolite iridium ultra
- **How much does it cost?** C$3171 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/62960192-autolite-ht15-4pk-platinum-high-thread-spark-plug-pack-4)

## Best For

- autolite iridium ultra enthusiasts

## Why This Product

- Trusted autolite iridium ultra brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted Legacy:** Backed by over 100 years and 11 billion spark plugs produced, Autolite guarantees quality and reliability you can count on.
- • **Patented OE Design:** Enjoy a more compressive seal and enhanced heat transfer that delivers consistent, powerful ignition every time.
- • **Tailored Vehicle Fit:** Specifically crafted to meet or exceed OE standards for Japanese, European, and Korean cars—no compromises on compatibility.
- • **Durability That Lasts:** Built to withstand erosion and wear, ensuring your engine runs smoother and stronger for longer periods.
- • **Precision Platinum Tip:** Experience superior fuel efficiency and reduced emissions with a fine wire tip engineered for longevity and performance.

## Overview

The Autolite HT15-4PK Platinum High Thread Spark Plug pack of 4 features a patented OE design with a platinum fine wire tip that enhances fuel efficiency, horsepower, and reduces emissions. Engineered for durability and a perfect vehicle-specific fit, these spark plugs deliver consistent ignition performance backed by over a century of Autolite’s trusted expertise.

## Description

Autolite HT15-4PK Platinum High Thread Spark Plug, Pack of 4

## Features

- Platinum fine wire tip provides improved fuel efficiency, lower emissions and improved horsepower with virtually no gap erosion
- Package Dimensions: 10.668 H x 3.048 L x 9.652 W (centimetres)
- Package Weight: 0.202 kilograms
- Country of Origin : Mexico

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Autolite Iridium Ultra |
| Core Material | Platinum |
| Gap Size | 0.04 Inches |
| Thread Size | 5/8" |
| Top Material Type | Nickel |
| Vehicle Service Type | Car |
| Global Trade Identification Number | 00009100262042 |
| Automotive Fit Type | Vehicle Specific Fit |
| UPC | 009100262042 |
| Manufacturer | FRAM |
| Model | Platinum High Thread Spark Plug |
| Item Weight | 7 ounces |
| Product Dimensions | 3.65 x 4.12 x 1.03 inches |
| Item model number | HT15-4PK |
| Exterior | Chrome |
| Manufacturer Part Number | HT15-4PK |

## Product Details

- **Brand:** Autolite Iridium Ultra
- **Core Material:** Platinum
- **Gap Size:** 0.04 Inches
- **Thread Size:** 5/8"
- **Top Material Type:** Nickel

## Images

![Autolite HT15-4PK Platinum High Thread Spark Plug, Pack of 4 - Image 1](https://m.media-amazon.com/images/I/71EmG09JU1L.jpg)
![Autolite HT15-4PK Platinum High Thread Spark Plug, Pack of 4 - Image 2](https://m.media-amazon.com/images/I/61Rg7El4WuL.jpg)
![Autolite HT15-4PK Platinum High Thread Spark Plug, Pack of 4 - Image 3](https://m.media-amazon.com/images/I/71VORpSUDQL.jpg)
![Autolite HT15-4PK Platinum High Thread Spark Plug, Pack of 4 - Image 4](https://m.media-amazon.com/images/I/717gW-wp7HL.jpg)
![Autolite HT15-4PK Platinum High Thread Spark Plug, Pack of 4 - Image 5](https://m.media-amazon.com/images/I/71Jo61loCbL.jpg)

## Available Options

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

## Questions & Answers

**Q: Do these break? As in putting then in or out.**
A: Mine did not break while putting them in.

**Q: How do i use the warranty? I got the plugs installed along with new coils and fuel injectors and I'm still getting misfire on one of my cylinders.**
A: Your misfire obviously is not due to the plug.  Run a compression check to find your dead cylinder.

**Q: Hi will this work in a 2006 hyundai tucson?**
A: They only work for what they are recommended for

**Q: Will these work on my 2004 Ford F-150 with no issues?**
A: Hello,Autolite HT15 will work on the 04 Ford F150.

## Customer Reviews

### ⭐⭐⭐⭐⭐ No electrode protection for shipping,  had 2 bad plugs out of 6
*by G***Y on May 22, 2025*

Great plugs, but 2 came damaged due to shipping. Plugs didn't have drop protection covering electrode

### ⭐⭐⭐⭐⭐ Will buy again.
*by A***R on February 28, 2025*

I have to use these due to our Ford Expedition 5.4 blew a spark plug about 13 years ago. With the insert they work great and last about 7 years before needing replacement. Much cheaper than the local parts stores.

### ⭐⭐⭐⭐⭐ The Best Spark Plug on the Market, a Must have when replacing stock or old plugs...
*by S***5 on December 10, 2014*

I rate these Autolite High Thread Spark Plugs a 5 Star due to the are the top of line Spark plug. I had Motorcraft H515 stock plugs in my 2007 Ford F150 and after 55K miles they all started to fail. Gas mileage went down and excelleration was sluggish, on top of that I was getting a chuckleing in the engine when the RPMs were at 1Grand and I was slowly giving gas to keep my speed up, the engine would chuckle and spit. At first I thought it would be the Transmission and I went and had the Transmission flushed and put in a new tranny filter. That did not work. I was still getting the sluggish pick up. Since I did not get any codes from the chuckleing in my excelleration I asked a freind and he told me it could be a coil pack bad or a spark plug bad. So, when I went to change out the Spark Plugs, if any of you have a Ford F150 knows that changing the spark plugs and coil packs in this 5.4 Ltr Triton V8 is NO FEAKIN JOKE!, every single spark plug was pretty much burned out and of course I broke the first one off inside the cylinder. Even though I tried to avoid that expensive Tune-up to do it myself, I still ended up paying a rather large repare bill to get the remaining plugs out. In the end, I had these Autolites put in and now my truck runs like it is a brand new truck. Excelleration is instant and the gas mileage just went up 3 more miles to the gallon.

## Frequently Bought Together

- Autolite HT15-4PK Platinum High Thread Spark Plug, Pack of 4
- ENA Set of 8 Straight Boot Ignition Coil Pack Compatible with Ford Lincoln Expedition Explorer F-150 Super Duty Mustang Mountaineer 4.6l 5.4l 6.8l Replacement for DG511 C1541 FD508
- LEXIVON 9/16-Inch Spark Plug Swivel Socket, 3/8" Drive x 6" Total Length | Enhanced Magnetic Design with Thin Wall Socket, Cr-v Steel (LX-SSPS9166)

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-03-11*