ACDelco 41-103 Professional Iridium Spark Plug , Pack of 1

Product Review

Features and Benefits
Step up to the latest spark plug technology with ACDelco's Professional Iridium Spark Plugs. ACDelco Iridium Plugs are the ideal replacement for today's top-performing vehicles. Iridium is one of the hardest metals used in spark plugs today, which allows for smaller, more efficient electrode designs for improved cold starting and quicker acceleration. Latest evolution in high-performance plug electrode material. Improved cold-starting and acceleration characteristics. Reduced ignition system voltage demands saves wear and tear. New-vehicle applications using iridium plugs continues to increase. Designed to last over 100,000 miles* in most applications.

* To the original retail purchaser. Parts only; installation not included. See your local retailer or independent service center that offers ACDelco Parts for details.

Function & Signs of Wear
Find out more about the ACDelco Professional Iridium Spark Plug and how it fits into the Starting and Charging System with the product facts below.

FUNCTION: Uses a high-voltage spark from the ignition coil to ignite the air/fuel mixture inside the engine's cylinders
SIGNS OF WEAR: Poor starting characteristics, decreased fuel economy, sluggish engine performance, excessive foiling or deposits on plug

What It Does
The Starting and Charging System starts the engine, maintains the battery's charge and provides power to the electrical accessories while the engine is running. The latest high-performance plug electrode material.

Product Features

Smaller, more efficient, Iridium electrode designs are to improve cold starting, quicker acceleration, and lifespan
Designed to last over 100,000 miles in most applications
ACDelco Iridium plugs require reduced ignition system voltage which increases lifespan of costly ignition system components
12-month/12,000-Mile Limited Warranty
ACDelco is an Original Equipment (OE) supplier and has the experience engineering and manufacturing components that achieve the highest quality standards required by vehicle manufacturers

Customer Reviews

Average Customer Review

(2 customer reviews)

No complaints. No big difference in power, but smoothens out engine., November 10, 2011

Jet Lee - See all my reviews

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This review is from: ACDelco 41-103 Professional Iridium Spark Plug , Pack of 1 (Automotive)

Replaced stock plugs on 2004 Trailblazer I6 engine with these bad boys. Haven't had chance to calculate fuel gains, but engine does seem to run smoother although low end grunt is a litle less pronounced now than with old plugs. Oh well, spent money already and I've read all other brands cause problems for my Trailblazer. A good buy IMO.

100k maintenance, May 29, 2010

Siper (Florida) - See all my reviews