What makes the iridium center electrode special?

The iridium alloy has an extremely high melting point and is six times harder than platinum. This allows for a fine wire center electrode that ensures high durability and a consistently stable spark, which is ideal for high-performance engines.

Why is the copper core important in this spark plug?

The pure copper core is included to help with heat removal from the spark plug. This prevents the plug from overheating, ensuring reliable operation and longevity.

Does this spark plug come with everything needed for installation?

This product includes a box of four NGK Laser Iridium spark plugs. It is recommended to refer to your vehicle's service manual for any specific installation procedures or additional hardware that may be required.

NGK Laser Iridium Spark Plug LMAR8GI-8 Box of 4

Name: NGK Laser Iridium Spark Plug Box of 4 (LMAR8GI-8)
Brand: NGK
SKU: ngk-ngk-laser-iridium-spark-plug-box-of-4-lmar8gi-8-t14-796129
Price: 15.49 USD
Availability: BackOrder

NGK Laser Iridium Spark Plug Box of 4 (LMAR8GI-8)

$15.49

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

NGK Laser Iridium Spark Plug Box of 4 (LMAR8GI-8). Features an iridium-tipped center electrode for improved durability and a stable spark.

Key Features

Fits ATV - 2021 YAMAHA.
Iridium tipped center electrode provides durability six times harder than platinum.
Pure alumina silicate ceramic insulator offers superior strength and better heat transfer.
Trivalent metal plating resists corrosion and seizing.
Copper core aids in heat removal.
Triple seals are designed to prevent leakage.

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Product Details

The NGK Laser Iridium spark plug features an iridium-tipped center electrode, which is six times harder than platinum, offering excellent durability and a consistently stable spark. This design is crucial for today's high-tech engines that demand precise ignition timing and reliable performance.

NGK builds these plugs with a pure alumina silicate ceramic insulator that offers superior strength and helps with heat transfer, preventing the plug from overheating. For added protection against corrosion and seizing, they use trivalent metal plating. The pure copper core inside also aids in heat removal, ensuring the plug operates efficiently. Most of these plugs also include a platinum pad on the ground electrode, which helps them wear evenly in distributorless ignition systems.

This box contains four NGK Laser Iridium spark plugs, identified by part number 92729. They are recommended for vehicles originally equipped with OE fine wire iridium alloy plugs, and the triple seals are designed to prevent leakage.