What makes the iridium center electrode better than platinum?

Iridium is a much harder metal than platinum, giving it a higher melting point. This means the center electrode can be made finer, which helps create a more stable spark and lasts much longer than platinum electrodes.

Do these spark plugs come with anti-seize on the threads?

These spark plugs feature trivalent metal plating on the threads, which provides superior anti-corrosion and anti-seizing properties. This helps make installation easier and removal less likely to cause thread damage.

What is the purpose of the platinum pad on the ground electrode?

The platinum pad on the ground electrode helps ensure even wear over time, especially in modern vehicles with distributorless ignition systems. This contributes to consistent performance and longer plug life.

NGK Ignition Spark Plugs LMAR9AI-10

Name: NGK Laser Iridium Spark Plug Box of 4 (LMAR9AI-10)
Brand: NGK
Price: 61.02 USD
Availability: InStock

NGK Laser Iridium Spark Plug Box of 4 (LMAR9AI-10)

$61.02

Only 6 left in stock

NGK Laser Iridium Spark Plug Box of 4 (LMAR9AI-10). Features an iridium center electrode for improved durability and a stable spark.

Key Features

Fits multiple KTM and Husqvarna motorcycle models from 2014-2019.
Box contains four NGK Laser Iridium spark plugs, part number LMAR9AI-10.
Iridium-tipped center electrode offers six times the durability of platinum.
Pure alumina silicate ceramic insulator provides superior strength and heat transfer.
Trivalent metal plating resists corrosion and seizing for easier installation and removal.
Platinum pad on the ground electrode ensures even wear in distributorless ignition systems.

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Will this fit your vehicle?

Product Details

You're getting a box of four NGK Laser Iridium spark plugs, part number LMAR9AI-10. These are designed as direct OE replacements, meaning they're built to the same standards as what came on your vehicle from the factory. They're a solid choice for a wide range of motorcycles, including models like the KTM 250 EXC-F and Husqvarna FE250.

The center electrode on these plugs is tipped with an iridium alloy, which is significantly harder than platinum and offers a very high melting point. This construction helps ensure a consistent, stable spark and improved longevity, even in high-performance engines. The pure alumina ceramic insulator helps with heat transfer, and the trivalent metal plating on the threads helps prevent corrosion and makes them easier to remove down the road. You'll also find a platinum pad on the ground electrode, which helps with even wear, especially in modern ignition systems.

These plugs are built to handle the demands of today's engines, offering a good balance of performance and how long they last. If your vehicle originally came with fine wire iridium plugs, these are a direct fit replacement.