---
product_id: 24815986
title: "Autolite Iridium XP Automotive Replacement Spark Plugs, XP3924 (4 Pack)"
brand: "autolite iridium ultra"
price: "€ 28.87"
currency: EUR
in_stock: true
url: https://www.desertcart.it/products/24815986-autolite-iridium-xp-automotive-replacement-spark-plugs-xp3924-4-pack
store_origin: IT
region: Italy
---

# Up to 100,000 miles extended change interval Platinum ground wire & V-trimmed electrode for optimal ignition 0.6mm finewire iridium tip for max fuel efficiency Autolite Iridium XP Automotive Replacement Spark Plugs, XP3924 (4 Pack)

**Brand:** autolite iridium ultra
**Price:** € 28.87
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite Performance, Drive Longer, Save Smarter!

## Quick Answers

- **What is this?** Autolite Iridium XP Automotive Replacement Spark Plugs, XP3924 (4 Pack) by autolite iridium ultra
- **How much does it cost?** € 28.87 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/24815986-autolite-iridium-xp-automotive-replacement-spark-plugs-xp3924-4-pack)

## 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 85+ years of expertise and a limited lifetime warranty for peace of mind on every journey.
- • **Fuel-Smart Design:** Laser-welded technology ensures optimal fuel efficiency, helping you save at the pump without sacrificing power.
- • **Precision Ignition:** 0.6mm finewire iridium center electrode delivers sharper, more consistent sparks for superior fuel combustion.
- • **Unmatched Longevity:** Engineered to last up to 100,000 miles, minimizing maintenance downtime and maximizing your drive time.
- • **Advanced Construction:** Platinum-protected ground wire and V-trimmed electrode optimize ignitability across all ignition systems, including DIS.

## Overview

Autolite Iridium XP spark plugs combine cutting-edge iridium finewire technology with durable platinum ground electrodes to deliver up to 100,000 miles of reliable, fuel-efficient ignition. Designed for all vehicle types and backed by a limited lifetime warranty, these spark plugs offer professional-grade performance trusted since 1936.

## Description

Autolite Iridium XP is designed and engineered in the USA, is one of the brand's most technologically advanced spark plugs ever. These spark plugs provide better durability and a more focused ignition for better overall ignitability and optimum performance. Autolite Iridium XP spark plugs function for all makes and models, both foreign and domestic, provides the automotive aftermarket and original equipment manufacturers with the highest quality ignition products. Consider upgrading to Autolite iridium XP spark plugs for increased performance. Autolite Iridium XP spark plugs are backed by an unmatched limited lifetime warranty.

## Features

- EXTENDED CHANGE INTERVAL: The Autolite Iridium XP automotive replacement spark plug is engineered to last for up to 100,000 miles depending on engine type making it one of the most durable spark plugs on the market today
- FUEL EFFICIENCY: These spark plugs utilize a 0.6mm finewire iridium centerwire tip design with laser welded technology for maximum fuel efficiency. Our finewire electrodes produce more focused and consistent ignitability resulting in less fuel consumption
- OPTIMAL PERFORMANCE: This replacement iridium spark plug provides better durability and a more focused ignition for better overall ignitabilty and optimal performance
- AUTOLITE ADVANTAGE: Autolite has been producing spark plugs since 1936 making it one of the most trusted and reliable brands for your OE replacement spark plug needs
- CONSTRUCTION: Every iridium spark plug comes with a platinum protected ground wire for maximum efficiency in all ignition types including DIS systems and a V-trimmed ground electrode for improved ignitability

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Autolite Iridium Ultra |
| Core Material | Iridium |
| Thread Size | 14 |
| Top Material Type | Nickel |
| Vehicle Service Type | Car, Truck |
| Global Trade Identification Number | 00009100044358 |
| Automotive Fit Type | Vehicle Specific Fit |
| UPC | 009100044358 |
| Manufacturer | FRAM |
| Model | XP3924-4PK |
| Item Weight | 7 ounces |
| Product Dimensions | 3.38 x 4 x 1 inches |
| Item model number | XP3924-4PK |
| Is Discontinued By Manufacturer | No |
| Exterior | Chrome |
| Manufacturer Part Number | XP3924-4PK |
| Position | Center |
| Special Features | Finewire design, Limited Lifetime Warranty |

## Product Details

- **Brand:** Autolite Iridium Ultra
- **Core Material:** Iridium
- **Thread Size:** 14
- **Top Material Type:** Nickel
- **Vehicle Service Type:** Car, Truck

## Images

![Autolite Iridium XP Automotive Replacement Spark Plugs, XP3924 (4 Pack) - Image 1](https://m.media-amazon.com/images/I/71zUj4JgPFL.jpg)

## Questions & Answers

**Q: Will these work on 2016 corolla s**
A: No, these spark plugs XP3924 do not fit that model. Autolite XP5683 will fit 2009-2019 Toyota Corolla 1.8L

**Q: how many spark plugs invluded**
A: My Mercedes has 2 plugs per cylinder so 12.

**Q: How do you make warranty claim for lifetime warranty?**
A: This is really life time device.

**Q: Ya vienen calibradas**
A: Si yo se los instale a mi toyota y encendido muy bien

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-05-06*