NGK® - Laser Iridium™ Spark Plug

9 reviews|Item # sp5197
$5.47 - $22.37
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Laser Iridium™ Spark Plug by NGK®. NGK manufactures all types of spark plugs and glow plugs featuring the latest in technology. Manufactured with both laser welded Iridium center electrode tip and a platinum disc welded to the backside of the ground electrode, these spark plugs last incredibly long while providing stable idle, superior anti fouling, improved fuel efficiency and lower emissions.


  • Laser welded Iridium center electrode tip
  • Platinum disc welded to backside of ground electrode provides long life
  • Trivalent Metal Plating for superior anti-corrosion and anti-seizing
  • Faster starts and quicker acceleration
  • Better fuel economy and lower emissions
  • Best OEM Iridium spark plug available
  • Original Equipment Manufacturer approved design

Since its inception, the Autolite® brand has provided the automotive aftermarket and Original Equipment manufacturers the highest quality ignition products. Autolite has been in operation for over 100 years and produced more than 11 billion spark plugs and glow plugs. Autolite plugs are specifically designed for each application to meet or exceed OE quality and performance. Autolite makes plugs for Japanese, European and Korean cars as well as plugs for Lawn & Garden and Power Sports.

As a leading supplier of spark plugs, ignition wire sets and Coil-on-Plug boots, the Autolite brand has the right ignition products for your vehicle, regardless of make or model, import or domestic.

Starting with a single product in 1936, NGK® became the world leader in innovation, technology, and premium quality in the manufacture of spark plugs for virtually every automotive manufacturer in the world. NGK`s extraordinary growth can be attributed to a philosophy of manufacturing the product where it is going to be used, which means a substantial number of products sold in the USA are made in America. One of the benefits of such a policy is the ability to work closely with manufacturers in developing products tailored specifically to their needs. Today with ISO 14001 and ISO/TS 16949 certification as well as state-of-the-art manufacturing and inventory facilities, NGK provides customers with the finest spark plugs and complimentary products.


NGK Spark Plugs warrants that the products, which it sells to the Distributor, seller, reseller, or customer, shall be free from defects in workmanship or materials. Except in the case of damage or defect attributable to NGK Spark Plugs, the Distributor, seller, reseller, or customer shall have no claim against NGK Spark Plugs for any damaged or defective product or part. In the event that any products or parts shall prove to be defective in workmanship or materials within a period of sixty (60) days from the delivery thereof to the Distributor, seller, reseller, or customer, NGK Spark Plugs shall repair or replace the same without cost to the Distributor, seller, reseller or customer. Except as herein stated, NGK Spark Plugs shall not be liable for any damages or for the breach of any warranty, express or implied, or for any other obligation or liability on account of the products which it may sell to the Distributor, reseller, seller or customer.

(a) If during the term of this Contract the Distributor shall have reason to believe it has any claim against NGK Spark Plugs in respect of any transaction growing out of this Contract, the Distributor shall notify NGK Spark Plugs in writing within sixty (60) days after it knows or has reason to know the basis of any such claim.

(b) Failure to give the notice prescribed by Subsection (a) of this section shall relieve NGK Spark Plugs from all liability on any claim in respect to any transaction arising out of this Contract.

(c) The provisions of this section shall survive the termination of any other portions of this Contract.

Magnuson-Moss Warranty Act:
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More



Every Customer can leave a review about our service and the product that was purchased. In order to leave your review for your new product, please follow the link in the email you receive after completing your purchase. You can rate appearance, ease of installation, price/value and product quality.

NGK® - Laser Iridium™ Spark Plug
NGK® - Laser Iridium™ Spark Plug
Average Rating: 4.9 of 5
4.3 of 5
NGK® 91578 - Laser Iridium™ Spark Plug
As advertised.
Posted by (Clemmons, NC) / 2014 Honda Accord
Was this review helpful for you? Yes
5 of 5
Quality No.1
Fit like it should. Would buy again.
Posted by (Springfield, MO) / 2010 Mini Cooper
Was this review helpful for you? Yes
5 of 5
As Shown on Site
The product is exactly as shown on site. Excellent service.
Posted by (Port Saint Lucie, FL) / 2015 Chrysler 300
Was this review helpful for you? Yes
5 of 5
Porsche Cayenne
Nice, very good quality, ready to use, works perfect, no complaints.
Posted by (New Brunswick, NJ) / 2005 Porsche Cayenne
Was this review helpful for you? Yes
5 of 5
Spark Plug
Simply the best.
Posted by (New Haven, CT) / 2006 Land Rover Range Rover
Was this review helpful for you? Yes
5 of 5
NGK 3588
Excellent product.
Posted by (Long Beach, CA) / 2003 Mercedes CL Class
Was this review helpful for you? Yes
4.8 of 5
Will Buy Again
This is one of the best spark plugs for my car. Will order several for spare once they are back to stock, because these are the same as I'm using now. Purchased it from here and never regretted it.
Posted by (Selma, AL) / 2013 Lincoln MKZ
Was this review helpful for you? Yes
5 of 5
Splendid Spark Plugs Made The Vehicle's Run Smoother
I've installed these plugs instead of the factory ones. They show night and day difference! Besides, perceptible fuel economy. I will definitely order them again in future.
Posted by (Bay City, MI) / 2001 Chevy Express
Was this review helpful for you? Yes
4.8 of 5
NGK Plugs
Great plug, engine purrs much better.
Posted by (Apo, AP) / 2009 Nissan 370Z
Was this review helpful for you? Yes
Low Prices Price match guarantee
Guaranteed Fitment Always the correct part
In-House Experts We know our products
Easy Returns Quick & Hassle Free

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