---
product_id: 2995695
title: "Professional 41-103 (12625058) Iridium Spark Plug (Pack of 1)"
brand: "acdelco"
price: "€ 20.92"
currency: EUR
in_stock: true
reviews_count: 13
category: "Ac Delco"
url: https://www.desertcart.gr/products/2995695-professional-41-103-12625058-iridium-spark-plug-pack-of-1
store_origin: GR
region: Greece
---

# Iridium tip for superior spark efficiency Suppressor seal blocks interference & leakage 1mm precise gap for optimal ignition Professional 41-103 (12625058) Iridium Spark Plug (Pack of 1)

**Brand:** acdelco
**Price:** € 20.92
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite your drive with precision and power!

## Quick Answers

- **What is this?** Professional 41-103 (12625058) Iridium Spark Plug (Pack of 1) by acdelco
- **How much does it cost?** € 20.92 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/2995695-professional-41-103-12625058-iridium-spark-plug-pack-of-1)

## Best For

- acdelco enthusiasts

## Why This Product

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

## Key Features

- • **Cold Start Champion:** Smaller, efficient electrode design ensures reliable starts even in the chilliest conditions.
- • **Seamless Vehicle Fit:** Engineered as a direct OEM replacement for cars, trucks, and vans—plug and play confidence.
- • **Engine Longevity Boost:** One-piece suppressor seal extends electrode life by preventing combustion leakage and radio frequency interference.
- • **Guaranteed Authenticity:** ACDelco’s trusted craftsmanship with a 7-year/unlimited mile warranty—no fakes, just performance.
- • **Precision Ignition Power:** Iridium electrode delivers unmatched spark stability for smoother engine idle and quicker acceleration.

## Overview

The ACDelco Professional 41-103 Iridium Spark Plug combines cutting-edge iridium technology with a precision 1mm gap and a suppressor seal to deliver superior engine performance, enhanced durability, and reliable cold starts. Designed as a direct OEM replacement, it ensures authentic quality backed by a 7-year unlimited mile warranty, making it the smart choice for professional-grade ignition.

## Description

ACDelco Professional Iridium Spark Plugs are a high quality replacement for many vehicles on the road today. They are our latest in spark plug technology and an exact replacement for your vehicle’s original components. Iridium composition provides a high melting point and great strength, and provides excellent wear resistance and durability. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function.

Review: These were great. Most importantly they were real. - Buying Iridium Spark Plugs online is often a horror show with some estimates being that 60% of them are counterfeit. I have learned this the hard way having to re-replace a set of fakes that required the intake manifold to be pulled in order to change the plugs. I was very pleased when I received these, performed all the checks and tests on them and found them to be genuine AC Delco plugs. I even examined the Iridium tip under a microscope. High quality at a very reasonable price, 5 Stars.
Review: Sparky - Works. What else can I say? Spark plugs, it is what it is.

## Features

- Iridium offers better engine idle stability and smoother performance
- Iridium allows for smaller, more efficient electrode designs for improved cold starting and quicker acceleration
- One piece suppressor seal blocks radio frequencies that can affect vehicle electronics
- Suppressor seal meters spark energy for longer electrode life and seals against combustion leakage

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000IZ2AVE |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #64,025 in Automotive ( See Top 100 in Automotive ) #440 in Automotive Replacement Spark Plugs |
| Brand | ACDelco |
| Brand Name | ACDelco |
| Compatible with Vehicle Type | Car, Truck, Van |
| Core Material | Iridium |
| Customer Reviews | 4.8 out of 5 stars 1,737 Reviews |
| Gap Size | 1 Millimeters |
| Included Components | 12681663 |
| Item Type Name | SPARK PLUG ASM-GAS ENG IGN |
| Item Weight | 1.44 ounces |
| Manufacturer | ACDelco |
| Manufacturer Part Number | 12625058 |
| Manufacturer Warranty Description | 7 Year / Unlimited Mile Limited Warranty on parts sold on or after 04/01/18. (Parts Only) Please see ACDelco.com for more details. |
| Model Number | 41-103 |
| Number of Packs | 1 |
| OEM Equivalent Part Number | 12625058 |
| Thread Size | 1(mm) |
| Top Material Type | Iridium |
| UPC | 808709616122 |
| Unit Count | 1.0 Count |
| Vehicle Service Type | Car, Truck, Van |

## Product Details

- **Brand:** ACDelco
- **Core Material:** Iridium
- **Thread Size:** 1(mm)
- **Top Material Type:** Iridium
- **Vehicle Service Type:** Car, Truck, Van

## Images

![Professional 41-103 (12625058) Iridium Spark Plug (Pack of 1) - Image 1](https://m.media-amazon.com/images/I/71D7FC6LYHL.jpg)

## Questions & Answers

**Q: Is there a recommended interval for changing my vehicle’s spark plugs?**
A: Yes, the interval depends on each vehicle model’s specifications. Refer to your vehicle Owner’s Manual for guidance on when you should change your vehicle’s spark plugs.

**Q: Should I change all of my vehicle’s spark plugs at the same time?**
A: Yes, when it is time for a scheduled spark plug replacement, all spark plugs should be changed. If a single spark plug is fouled or damaged outside of scheduled maintenance, finding the source of the damage and changing it is recommended.

**Q: Can I just clean my spark plugs instead of replacing them?**
A: No, ACDelco does not recommend cleaning old spark plugs. Cleaning spark plugs does not repair broken components, chipped insulator tips, and worn electrodes and wires.

**Q: What is pre-ignition and can it damage my engine?**
A: Yes, pre-ignition can cause serious damage to an engine. Pre-ignition, often accompanied by engine knocking sounds, air and fuel ignite in the engine before the spark plug fires. The condition commonly occurs when old spark plugs are worn or dirty.

**Q: Does a diesel engine require a different type of plug than a gas engine?**
A: Yes, diesel engines require glow plugs instead of spark plugs. To learn what type of glow plugs or spark plugs your vehicle requires, refer to your vehicle Owner’s Manual for guidance.

## Customer Reviews

### ⭐⭐⭐⭐⭐ These were great. Most importantly they were real.
*by R***Y on October 15, 2023*

Buying Iridium Spark Plugs online is often a horror show with some estimates being that 60% of them are counterfeit. I have learned this the hard way having to re-replace a set of fakes that required the intake manifold to be pulled in order to change the plugs. I was very pleased when I received these, performed all the checks and tests on them and found them to be genuine AC Delco plugs. I even examined the Iridium tip under a microscope. High quality at a very reasonable price, 5 Stars.

### ⭐⭐⭐⭐⭐ Sparky
*by J***E on April 10, 2026*

Works. What else can I say? Spark plugs, it is what it is.

### ⭐⭐⭐⭐⭐ all parts should be this good
*by T***Y on April 12, 2026*

Update- after driving for a week I developed a mis fire in #6, I had replaced the coils when I did the plugs, put an old coil on 6, still P0306, bought a new coil for 6, finally after checking the fuel pressure, I was going to check compression- when I found the #6 plug had .020 gap and didnt look like the other week old plugs, bought another delco plug locally and replaced it - car runs great now - recheck the gaps and lay all the plugs out and make sure the electrodes all look the same. My 100k and 200k miles spark plugs, they came gapped almost exactly right, it take quality to last 100k miles and they have once already

## Frequently Bought Together

- ACDelco GM Original Equipment 41-103 Iridium Spark Plug
- Delphi GN10114 Ignition Coil
- GM Genuine Parts 15123628 Positive Crank Ventilation (PCV) Hose, Black

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-06-18*