---
product_id: 6929205
title: "Autolite 3924 Copper Resistor Automotive Replacement Spark Plug, Hex Size 5/8 inch (1 Pack)"
brand: "autolite iridium ultra"
price: "VT1081"
currency: VUV
in_stock: true
url: https://www.desertcart.vu/products/6929205-autolite-3924-copper-resistor-automotive-replacement-spark-plug-hex-size
store_origin: VU
region: Vanuatu
---

# Optimized for better fuel economy and smooth acceleration Full copper core electrode for max thermal conductivity Heat-fused internal seal ensures leak-proof durability Autolite 3924 Copper Resistor Automotive Replacement Spark Plug, Hex Size 5/8 inch (1 Pack)

**Brand:** autolite iridium ultra
**Price:** VT1081
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite your drive with Autolite’s copper spark – where power meets precision!

## Quick Answers

- **What is this?** Autolite 3924 Copper Resistor Automotive Replacement Spark Plug, Hex Size 5/8 inch (1 Pack) by autolite iridium ultra
- **How much does it cost?** VT1081 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/6929205-autolite-3924-copper-resistor-automotive-replacement-spark-plug-hex-size)

## 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

- • **Leak-Proof Durability:** Heat-fused internal seal guarantees long-lasting, maintenance-free reliability.
- • **Precision Engineering:** Cold-formed steel shell with precision rolled threads for a perfect fit every time.
- • **Fuel-Savvy Performance:** Designed to boost fuel economy and provide quick, smooth starts.
- • **Trusted Legacy Since 1936:** Backed by decades of innovation and proven Autolite quality.
- • **Unmatched Thermal Efficiency:** Copper core electrode delivers superior heat transfer for peak engine performance.

## Overview

The Autolite 3924 Copper Resistor Spark Plug features a full copper core electrode for enhanced thermal conductivity, a heat-fused internal seal for leak-proof durability, and a copper-glass seal bonding for optimal voltage delivery. Engineered with precision rolled threads and a cold-formed steel shell, it ensures reliable fit and performance. Ideal for quick starts, improved fuel efficiency, and smooth acceleration, this spark plug is a trusted choice backed by Autolite’s legacy since 1936.

## Description

Autolite 3924 Copper Resistor Automotive Replacement Spark Plug, Hex Size 5/8 inch (1 Pack)

## 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 |
|---------------|-------|
| Brand | Autolite Iridium Ultra |
| Core Material | Copper |
| Thread Size | RM |
| Top Material Type | Alloy Steel |
| Vehicle Service Type | Motorcycle |
| Global Trade Identification Number | 00009100039248 |
| Automotive Fit Type | Vehicle Specific Fit |
| UPC | 009100039248 |
| OEM Part Number | 3924 |
| Manufacturer | Autolite |
| Model | 3924 |
| Item Weight | 1.44 ounces |
| Product Dimensions | 3.4 x 1.1 x 1 inches |
| Item model number | 3924 |
| Is Discontinued By Manufacturer | Yes |
| Exterior | Machined |
| Manufacturer Part Number | 3924 |
| Position | Center |

## Product Details

- **Brand:** Autolite Iridium Ultra
- **Core Material:** Copper
- **Thread Size:** RM
- **Top Material Type:** Alloy Steel
- **Vehicle Service Type:** Motorcycle

## Images

![Autolite 3924 Copper Resistor Automotive Replacement Spark Plug, Hex Size 5/8 inch (1 Pack) - Image 1](https://m.media-amazon.com/images/I/61HfGn9+YBL.jpg)
![Autolite 3924 Copper Resistor Automotive Replacement Spark Plug, Hex Size 5/8 inch (1 Pack) - Image 2](https://m.media-amazon.com/images/I/7149LMaGtCL.jpg)
![Autolite 3924 Copper Resistor Automotive Replacement Spark Plug, Hex Size 5/8 inch (1 Pack) - Image 3](https://m.media-amazon.com/images/I/71sRR+tS62L.jpg)
![Autolite 3924 Copper Resistor Automotive Replacement Spark Plug, Hex Size 5/8 inch (1 Pack) - Image 4](https://m.media-amazon.com/images/I/71MGX4XYJQL.jpg)
![Autolite 3924 Copper Resistor Automotive Replacement Spark Plug, Hex Size 5/8 inch (1 Pack) - Image 5](https://m.media-amazon.com/images/I/71OdKPYQstL.jpg)

## Available Options

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

## Questions & Answers

**Q: This is a replacement for my john deere snow blower - model 1330se.  is there a gap requirement on this plug specific to my application?**
A: Good Morning! There is no gap specifically for your application. The 3924 plug was engineered to perform at a specific gap setting. What this means is that if John Deere says that the 3924 will match up to your OEM application it means that your snow blower was designed, engineered, and built to run with a plug at that gap setting.  I hope you have a great weekend.

**Q: how many is there ? for 4.71? 4 or one piece ?**
A: Per single piece

**Q: Do these come calibrated already?**
A: If you mean spaced, as in the spacing of the electrode on the tip, maybe.  Different engines require different spacing based on the requirements as designed by the mfg.  Always check the specs and space accordingly.  You may find the spacing correct as delivered, but that would be a fluke.

**Q: How many spark plugs Do you get for$5.66**
A: They come in 4

## Frequently Bought Together

- Autolite 3924 Copper Resistor Automotive Replacement Spark Plug, Hex Size 5/8 inch (1 Pack)
- Redex Petrol System Cleaner 250ml, Petrol Injector Cleaner To Remove Harmful Deposits, Maximise Performance & Increase Fuel Economy With Redex Fuel Additives For Petrol Engines, Suitable For Hybrids

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**Shop now:** [https://www.desertcart.vu/products/6929205-autolite-3924-copper-resistor-automotive-replacement-spark-plug-hex-size](https://www.desertcart.vu/products/6929205-autolite-3924-copper-resistor-automotive-replacement-spark-plug-hex-size)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-01-23*