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NGK - The Ignition Specialist

Most standard iridium plugs will not meet OEM service interval mileage recommendations if used in today’s engines, which can include turbos and superchargers. These elements, in addition to direct injection and high operating temperatures, can shorten a plug’s life span. Using standard iridium plugs can also reduce performance and efficiency and increase emissions.

Get Better Service Life & Performance with High Ignitability

20% OFF $125+ WITH PROMO CODE: GREEN20, Online Only

20% OFF $125+ WITH PROMO CODE: GREEN20, Online Only

Get 20% off $125 with promo code GREEN20. Online, ship to home only. 04/23/26 – 04/27/26. *Maximum discount $50.

20% off $125+: Valid on regularly priced in-stock items for Ship to Home orders that when purchased together total $125 or more (before tax, shipping and discount) on the website only. Excludes AIRAID, B&M, Bully Dog, DeVilbiss, Edelbrock, Flowmaster, Holley, Hurst, Ingersoll-Rand, K&N, MSD, SCT, and Spectre items.

To Redeem Offer: Add qualifying items totaling $125 or more to your shopping cart and select “Ship” as your delivery method. Enter promo code GREEN20 in the cart. The total in your shopping cart will be adjusted after promo code is applied. Excluded brands contribute toward minimum purchase amount to qualify for offer but are not eligible for discount. (Maximum $50.00 Discount.) Valid Thursday, April 23rd to Monday, April 27th, 2026 (11:59pm Hawaii Time Zone). Coupon code is not redeemable for cash, is nontransferable and cannot be replaced if lost or stolen. Not valid on same-day delivery orders. Void if copied, transferred or where prohibited by law. Customer pays sales tax and shipping fees.

Offer subject to adjustment due to returns, cancellations and exchanges. Additional taxes and duties may apply. Not valid with any other promotional gift with purchase. Offer may be modified or discontinued at any time without notice.

Offer Terms: Offer does not apply to gift card orders. Offer does not apply to Lead-Acid batteries. Cannot be used in combination with any other certificates, offers, or discounts or for payment on account. Not valid on previous purchases or store purchases. Shipping & handling and taxes do not qualify towards the minimum purchase. Valid for retail customers only. OReillyAuto.com only ships orders within the U.S.

Excluded Brands: Offer does not apply to AIRAID, B&M, Bully Dog, DeVilbiss, Edelbrock, Flowmaster, Holley, Hurst, Ingersoll-Rand, K&N, MSD, SCT, and Spectre items.


Square Platinum Electrode Spark Plugs
Dual Fine Electrode Spark Plugs
Projected Square Platinum Electrode Spark Plugs
Not only meeting OEM service interval mileage recommendations thanks to its longer service life, high ignitability tips also provide:
a more complete burn of fuel
smoother idling
quicker throttle response
better cold starts

Our High Ignitability Spark Plugs

Photo of Laser Iridium and Laser Platinum premium spark plugs

Laser Iridium & Laser Platinum

The upgraded, OE replacement spark plug. Fine-tipped center electrode with dual precious metals and high ignitability ground electrode designs. The choice plug of leading OEMs for its outstanding longevity.

Shop NGK Laser Iridium and Laser Platinum Spark Plugs

More Quality Spark Plug Solutions

Image of Iridium IX Spark Plugs

Iridium IX

The aftermarket solution for high performance and modified engines with superior anti-fouling capability. Fine-tipped center electrode of iridium alloy with unique tapered ground electrode.

Shop NGK Iridium IX® Spark Plugs

Image of G-Power Spark Plugs

G-Power

Faster starts, quicker acceleration, improved fuel economy, and lower emissions. Fine-tipped center electrode of platinum alloy with tapered ground electrode. Get better performance at a value.

Shop NGK G-Power® Spark Plugs

Image of V-Power and Standard Nickel/Copper Spark Plugs

V-Power and Standard Nickel/Copper

The economical and reliable OE replacement plug best suited for older vehicles. Standard, v-shaped nickel center electrodes with standard ground electrodes, and copper core.

Shop NGK V-Power® and Standard Nickel/Copper Spark Plugs

Watch: Spark Plug Service Intervals

How often do spark plugs need to be changed? Here we discuss the importance of looking into recommended service intervals.

Pro Tip: Check your owner's manual for your OEM vehicle recommended service intervals or the NGK Catalog.

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With over 80 years of automotive expertise, we are driven by extreme dedication to performance and quality. From OEM to aftermarket, our people push the boundaries of innovation to bring the latest technologies to market under the NGK and NTK brands.