---
product_id: 389809778
title: "Autolite APP3923 Double Platinum Automotive Replacement Spark Plugs (4 Pack)"
brand: "autolite iridium ultra"
price: "€ 40.00"
currency: EUR
in_stock: true
reviews_count: 5
url: https://www.desertcart.fi/products/389809778-autolite-app3923-double-platinum-automotive-replacement-spark-plugs-4-pack
store_origin: FI
region: Finland
---

# Longer plug life Fires quicker & cleaner Superior heat transfer Autolite APP3923 Double Platinum Automotive Replacement Spark Plugs (4 Pack)

**Brand:** autolite iridium ultra
**Price:** € 40.00
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite your drive with Autolite’s double platinum edge!

## Quick Answers

- **What is this?** Autolite APP3923 Double Platinum Automotive Replacement Spark Plugs (4 Pack) by autolite iridium ultra
- **How much does it cost?** € 40.00 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/389809778-autolite-app3923-double-platinum-automotive-replacement-spark-plugs-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

- • **Heat Mastery:** Yttrium-enhanced ground electrode optimizes heat transfer, preventing overheating and boosting reliability.
- • **Enduring Platinum Power:** Platinum-to-platinum firing delivers unmatched durability and consistent performance under all conditions.
- • **Lightning-Fast Ignition:** Necked-down center electrode ensures quicker, cleaner sparks for effortless starts and rapid acceleration.
- • **Precision Gap Stability:** High nickel alloy side electrode maintains exact gap, virtually eliminating erosion for extended lifespan.
- • **Trusted Legacy Since 1936:** Autolite’s decades of expertise guarantee OE-quality replacement spark plugs you can rely on.

## Overview

Autolite APP3923 Double Platinum Spark Plugs (4 Pack) feature a necked-down center electrode for faster ignition, platinum-to-platinum firing for enhanced durability, and a Yttrium-enhanced ground electrode for superior heat management. Designed with a high nickel alloy side electrode to maintain precise gap and minimize erosion, these plugs ensure longer life and reliable performance. Backed by Autolite’s trusted legacy since 1936, they deliver OE-quality replacement for smoother starts and quicker acceleration.

## Description

Full description not available

## Features

- MAXIMUM PERFORMANCE: Every Double Platinum spark plug is necked-down center electrode fires quicker and cleaner, with less voltage for easier starts and quicker acceleration. Full copper core electrode provides better performance in all conditions
- IMPROVED DURABILITY: Our spark plugs are platinum-to-platinum firing for superior durability and super conductive Yttrium enhanced ground electrode provides superior heat transfer
- CONSTRUCTION: These spark plugs are platinum enhanced high nickel alloy side electrode maintains precision gap and assures virtually no gap erosion for longer plug life
- high nickel alloy side electrode maintains precise gap
- 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 plugs needs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | FRAM |
| Brand | Autolite Iridium Ultra |
| Model | Double Platinum Spark Plug |
| Product Dimensions | 8.59 x 10.16 x 2.54 cm; 199.58 g |
| Item model number | APP3923-4PK |
| Exterior | Chrome |
| Manufacturer Part Number | APP3923-4PK |
| Position | Center |
| Item Weight | 200 g |

## Product Details

- **Brand:** Autolite Iridium Ultra
- **Core material:** Platinum
- **Thread size:** 5/8 inches
- **Top material type:** Nickel
- **Vehicle service type:** Car, Truck

## Images

![Autolite APP3923 Double Platinum Automotive Replacement Spark Plugs (4 Pack) - Image 1](https://m.media-amazon.com/images/I/81iDBnNV9ML.jpg)
![Autolite APP3923 Double Platinum Automotive Replacement Spark Plugs (4 Pack) - Image 2](https://m.media-amazon.com/images/I/61VxiODcznL.jpg)
![Autolite APP3923 Double Platinum Automotive Replacement Spark Plugs (4 Pack) - Image 3](https://m.media-amazon.com/images/I/71v600qJpsL.jpg)
![Autolite APP3923 Double Platinum Automotive Replacement Spark Plugs (4 Pack) - Image 4](https://m.media-amazon.com/images/I/81773T3oQTL.jpg)
![Autolite APP3923 Double Platinum Automotive Replacement Spark Plugs (4 Pack) - Image 5](https://m.media-amazon.com/images/I/71OdKPYQstL.jpg)

## Available Options

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

## Questions & Answers

**Q: 2000 rav4 Toyota 2.0**
A: Work great on my sequoia even at -16 starts so I see why not on a rav4

**Q: Do these fit a 2009 Toyota correlation 1.8**
A: Nope made my car knock lol had to get different ones

**Q: Does this fit a 2010 hyundai sonata gls?**
A: No, these Autolite APP3923 do not fit that model. Autolite APP3923 will fit 2010 Hyundai Sonata (2.4L) and Autolite APP3924 will fit 2010 Hyundai Sonata (3.3L)

**Q: pre gapped?**
A: No

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    WORKED LIKE NEW PLUGS SHOULD! GREAT VALUE!
  

*by M***Y on Reviewed in the United States on 16 August 2024*

These were perfect! Will buy again!but... don't get me started on what a piece of crap the 2004 Dodge Stratus is when it comes to retrieving the broken old sparkplug down in the valve cover hole. Thank god the ceramic didn't break! Crisis averted! Ha Ha Ha! Love our NEW plugs!

### ⭐⭐⭐⭐⭐ 







  
  
    Excellent product
  

*by A***R on Reviewed in Canada on 21 June 2024*

Excellent quality. Fast delivery

### ⭐⭐⭐⭐⭐ 







  
  
    Fit perfect. Car ran way better.
  

*by M***P on Reviewed in the United States on 11 September 2024*

They fit perfect and worked great. Gap was perfect. Got rid of my misfire.

## Frequently Bought Together

- Autolite APP3923 Double Platinum Automotive Replacement Spark Plugs (4 Pack)
- LEXIVON 5/8" Swivel Magnetic Spark Plug Socket, 3/8" Drive x 10" Total Length | Enhanced Magnetic Design with Thin Wall Socket, Cr-v Steel (LX-122)
- CTA Tools 3235 Spark Plug Gapper

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**Shop now:** [https://www.desertcart.fi/products/389809778-autolite-app3923-double-platinum-automotive-replacement-spark-plugs-4-pack](https://www.desertcart.fi/products/389809778-autolite-app3923-double-platinum-automotive-replacement-spark-plugs-4-pack)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-07*