---
product_id: 593387375
title: "Autolite 104-4PK Copper Resistor Spark Plug, Pack of 4"
brand: "autolite iridium ultra"
price: "₪229"
currency: ILS
in_stock: false
reviews_count: 5
category: "Autolite Iridium Ultra"
url: https://www.desertcart.co.il/products/593387375-autolite-104-4pk-copper-resistor-spark-plug-pack-of-4
store_origin: IL
region: Israel
---

# Boosts fuel efficiency & smooth acceleration Full copper core for max thermal conductivity Leak-proof copper-glass seal for durability Autolite 104-4PK Copper Resistor Spark Plug, Pack of 4

**Brand:** autolite iridium ultra
**Price:** ₪229
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Ignite your drive with Autolite’s copper core power!

## Quick Answers

- **What is this?** Autolite 104-4PK Copper Resistor Spark Plug, Pack of 4 by autolite iridium ultra
- **How much does it cost?** ₪229 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.il](https://www.desertcart.co.il/products/593387375-autolite-104-4pk-copper-resistor-spark-plug-pack-of-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 Autolite’s 80+ years of innovation, these spark plugs combine performance and value for the discerning driver.
- • **Fuel-Savvy Ignition:** Engineered to deliver quicker starts, enhanced fuel economy, and seamless acceleration—feel the difference every drive.
- • **Unmatched Durability:** Heat-fused internal seal and leak-proof copper-glass bonding guarantee long-lasting reliability and zero misfires.
- • **Precision Engineering:** Cold-formed steel shell with rolled threads and multi-rib insulator reduces flash-over and radio frequency interference.
- • **Peak Thermal Performance:** Full copper core electrode ensures superior heat transfer for consistent ignition under all conditions.

## Overview

Autolite 104-4PK Copper Resistor Spark Plugs feature a full copper core electrode for superior thermal conductivity, a leak-proof copper-glass seal for enhanced durability, and precision engineering that improves fuel efficiency and acceleration. Designed for universal fit and backed by decades of trusted innovation, these spark plugs deliver reliable, high-performance ignition for a smoother, more efficient ride.

## Description

Autolite Copper Core Spark Plugs deliver quick starts, good fuel economy, and smooth acceleration. The copper-glass seal bonds insulator and terminal post center electrode together to ensure full required voltage at spark gap, creating a gas-tight seal that is 100 percent leak-proof. Copper Core spark plugs feature a cold-formed steel shell and precision rolled threads, and a one-piece terminal post that adds strength. The multi-rib insulator reduces the danger of "flash-over" to prevent misfires, and the resistor reduces radio frequency interference (RFI) and electrode erosion. The full copper core electrode provides better performance in all conditions. Autolite Copper Core plugs are your industry standard.

Review: Don't take more then 5 minutes to install worked good and price was right noticed small performance gain as my other spark plugs were shot would recommend
Review: they were the shortest top plug I could find to fit a gm vortec head

## Features

- MAXIMUM PERFORMANCE: Every Copper Spark Plug has a full copper core electrode which provides higher thermal conductivity for better performance in all conditions
- IMPROVED DURABILITY: All Autolite spark plugs are Leak proof and come with a heat fused internal seal for long lasting durability
- CONSTRUCTION: These replacement spark plugs have a copper-glass seal which bonds the insulator and the terminal post center electrode together
- FUEL EFFICIENCY: The Autolite copper automotive replacement spark plug are guaranteed to deliver quick starts, better fuel economy and smooth acceleration
- AUTOLITE ADVANTAGE: Since 1936, Autolite has been a trusted leader and innovator in spark plug technology. You can count on our copper plugs for performance and value, backed by decades of experience and passion

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000CBO1K2 |
| Assembly Required | No |
| Automotive Fit Type | Universal Fit |
| Brand | Autolite Iridium Ultra |
| Colour | Neutral |
| Core Material | Copper |
| Country of Origin | USA |
| Customer Reviews | 4.6 4.6 out of 5 stars (87) |
| Date First Available | 18 December 2023 |
| Exterior | Chrome |
| Generic Name | Spark Plug |
| Global Trade Identification Number | 00009100520838 |
| Item Dimensions LxWxH | 25 x 25 x 86 Millimeters |
| Item Weight | 181 g |
| Item model number | 104-4PK |
| Manufacturer | FRAM |
| Manufacturer Part Number | 104-4PK |
| Model | 104-4PK |
| Net Quantity | 4.0 Count |
| Position | Center |
| Product Dimensions | 2.54 x 2.54 x 8.59 cm; 181.44 g |
| Thread Size | 14mm |
| Top Material Type | Alloy Steel |
| UPC | 009100520838 |
| Vehicle Service Type | Snowmobile, UTV, Van, Watercraft |

## Product Details

- **Brand:** Autolite Iridium Ultra
- **Core Material:** Copper
- **Thread Size:** 14mm
- **Top Material Type:** Alloy Steel
- **Vehicle Service Type:** Snowmobile, UTV, Van, Watercraft

## Images

![Autolite 104-4PK Copper Resistor Spark Plug, Pack of 4 - Image 1](https://m.media-amazon.com/images/I/71-GAahSRNL.jpg)
![Autolite 104-4PK Copper Resistor Spark Plug, Pack of 4 - Image 2](https://m.media-amazon.com/images/I/71sRR+tS62L.jpg)
![Autolite 104-4PK Copper Resistor Spark Plug, Pack of 4 - Image 3](https://m.media-amazon.com/images/I/71MGX4XYJQL.jpg)
![Autolite 104-4PK Copper Resistor Spark Plug, Pack of 4 - Image 4](https://m.media-amazon.com/images/I/71OdKPYQstL.jpg)
![Autolite 104-4PK Copper Resistor Spark Plug, Pack of 4 - Image 5](https://m.media-amazon.com/images/I/81C0GaELbSL.jpg)

## Available Options

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

## Questions & Answers

**Q: What engine does it go in**
A: 4.6 Liter V8

**Q: Are they already gapped?**
A: Yes

**Q: Where are these plugs made?**
A: Hello,

Thank you for your inquiry and interest in our products. They're made in the US.

Mega Mart Warehouse LLC

**Q: Do you get 4 plugs for the price?**
A: those are normally priced as per spark plug unless it says "set of 4"

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by M***T on 30 December 2023*

Don't take more then 5 minutes to install worked good and price was right noticed small performance gain as my other spark plugs were shot would recommend

### ⭐⭐⭐⭐⭐ Review
*by D***D on 19 October 2025*

they were the shortest top plug I could find to fit a gm vortec head

### ⭐⭐⭐⭐⭐ Review
*by D***D on 24 May 2019*

Gapped them and installed easily, works great. Not sure how old the original plugs were but I get about 60 extra km per tank.

## Frequently Bought Together

- Autolite 104 Copper Resistor Automotive Replacement Spark Plugs (4 Pack)
- Wix Oil Filter - 51515

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*Product available on Desertcart Israel*
*Store origin: IL*
*Last updated: 2026-02-25*