---
product_id: 20323951
title: "Professional 41-121 (55585517) Iridium Spark Plug (Pack of 1)"
brand: "acdelco"
price: "₨9423"
currency: LKR
in_stock: true
reviews_count: 8
category: "Ac Delco"
url: https://www.desertcart.lk/products/20323951-professional-41-121-55585517-iridium-spark-plug-pack-of-1
store_origin: LK
region: Sri Lanka
---

# One-piece suppressor seal blocks radio interference Iridium fine-wire electrode for superior ignition Quick cold starts & rapid acceleration Professional 41-121 (55585517) Iridium Spark Plug (Pack of 1)

**Brand:** acdelco
**Price:** ₨9423
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite your ride with precision and power — don’t get left in the cold!

## Quick Answers

- **What is this?** Professional 41-121 (55585517) Iridium Spark Plug (Pack of 1) by acdelco
- **How much does it cost?** ₨9423 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/20323951-professional-41-121-55585517-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

- • **Tech-Forward Design:** Suppressor seal prevents electronic interference for seamless vehicle operation
- • **Effortless Cold Starts:** Small electrode design delivers quick, reliable ignition every time
- • **Precision Ignition Power:** Iridium electrode ensures stable idle and smooth engine performance
- • **Carbon-Busting Efficiency:** Fine-wire tip actively burns away deposits, maintaining peak spark plug health
- • **Durability Meets Performance:** High melting point iridium resists wear for long-lasting reliability

## Overview

The ACDelco Professional 41-121 Iridium Spark Plug combines cutting-edge iridium technology with a suppressor seal to deliver exceptional engine stability, quick starts, and long-lasting durability. Designed as a direct OEM replacement, it ensures optimal fit and function for motorcycles, backed by a 7-year unlimited mile warranty and trusted by thousands of satisfied users.

## 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: Great product - Great price Came fast Works great in 2015 Cruze
Review: OEM plugs. Get a torque wrench. - OEM plugs for my 2015 Chevrolet Trax. Came pre-gapped. I verified the gap and they were all correct. Took minutes to install. My vehicle runs much smoother nwo! Word of the wise: use a torque wrench to make sure you don’t over tighten the plugs. You’ll regret it otherwise.

## Features

- Iridium offers excellent engine idle stability and smooth performance
- Iridium allows for small, efficient electrode designs for reliable cold starting and quick acceleration
- Iridium fine-wire electrode helps burn away carbon deposits on the tip of the plug as they form
- One piece suppressor seal helps block radio frequencies that can affect vehicle electronics
- Suppressor seal meters spark energy for long electrode life and helps prevent combustion leakage

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00DU252BM |
| Best Sellers Rank | #72,233 in Automotive ( See Top 100 in Automotive ) #417 in Automotive Replacement Spark Plugs |
| Brand | ACDelco |
| Brand Name | ACDelco |
| Compatible with Vehicle Type | Motorcycle |
| Core Material | Iridium |
| Customer Reviews | 4.8 out of 5 stars 789 Reviews |
| Global Trade Identification Number | 40707773972098 |
| Included Components | Spark Plug |
| Item Type Name | Spark Plug |
| Item Weight | 3.84 ounces |
| Manufacturer | ACDelco |
| Manufacturer Part Number | 55585517 |
| 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. |
| Thread Size | 14mm |
| Top Material Type | Nickel |
| UPC | 707773972090 |
| Unit Count | 1.0 Count |
| Vehicle Service Type | Motorcycle |

## Product Details

- **Brand:** ACDelco
- **Core Material:** Iridium
- **Thread Size:** 14mm
- **Top Material Type:** Nickel
- **Vehicle Service Type:** Motorcycle

## Images

![Professional 41-121 (55585517) Iridium Spark Plug (Pack of 1) - Image 1](https://m.media-amazon.com/images/I/61Z3E8ykbwL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product
*by A***N on September 5, 2025*

Great price Came fast Works great in 2015 Cruze

### ⭐⭐⭐⭐⭐ OEM plugs. Get a torque wrench.
*by M***A on September 28, 2025*

OEM plugs for my 2015 Chevrolet Trax. Came pre-gapped. I verified the gap and they were all correct. Took minutes to install. My vehicle runs much smoother nwo! Word of the wise: use a torque wrench to make sure you don’t over tighten the plugs. You’ll regret it otherwise.

### ⭐⭐⭐⭐⭐ Great quality
*by L***S on February 7, 2025*

Excellent quality and great price!

## Frequently Bought Together

- ACDelco GM Original Equipment 41-121 Iridium Spark Plug
- ACDelco GM Original Equipment D521C Ignition Coil
- Permatex 22058 Dielectric Tune-Up Grease, 3oz. - High Performance Dielectric Grease Used To Protect Terminals, Spark Plugs, Wiring And Other Electrical Connections Against Salt, Dirt, And Corrosion

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**Shop now:** [https://www.desertcart.lk/products/20323951-professional-41-121-55585517-iridium-spark-plug-pack-of-1](https://www.desertcart.lk/products/20323951-professional-41-121-55585517-iridium-spark-plug-pack-of-1)

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-02-23*