What makes iridium spark plugs different from platinum?

Iridium is a much harder metal than platinum, with a higher melting point. This allows for a finer wire center electrode, which requires less voltage to create a spark and offers greater durability over time compared to platinum plugs.

Do these spark plugs come pre-gapped?

NGK Laser Iridium spark plugs are typically pre-gapped at the factory for their intended OE application. However, it's always recommended to check the gap against your vehicle's specifications before installation, as it can sometimes be affected by shipping.

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

The platinum pad on the ground electrode helps to ensure even wear, especially in modern distributorless ignition systems. This contributes to a longer service life and consistent performance throughout the plug's lifespan.

NGK Spark Plugs MR7BI-8 Box of 4

Name: NGK Laser Iridium Spark Plug Box of 4 (MR7BI-8)
Brand: NGK
Price: 58.83 USD
Availability: InStock

NGK Laser Iridium Spark Plug Box of 4 (MR7BI-8)

$58.83

On Backorder — Expected to ship by May 3, 2026

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 (MR7BI-8). Features a fine wire iridium center electrode for a stable spark and improved longevity.

Key Features

Fits a wide range of Can-Am Spyder and Ski-Doo models.
Box contains four NGK Laser Iridium spark plugs.
Fine wire iridium center electrode offers high durability and a stable spark.
Iridium alloy has an extremely high melting point, suitable for high-tech engines.
Pure alumina silicate ceramic insulator provides superior strength and heat transfer.
Platinum pad on the ground electrode ensures even wear in distributorless ignition systems.

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

Product Details

You're getting a box of four NGK Laser Iridium spark plugs, part number MR7BI-8. These are designed as direct OE replacements, meaning they're built to the same standards as the plugs your vehicle came with from the factory. They feature a fine wire iridium center electrode, which is known for its durability and ability to maintain a consistent spark, even in high-performance engines. The iridium alloy has a very high melting point, making it well-suited for today's advanced engine designs.

NGK uses a pure alumina silicate ceramic insulator for strength and effective heat transfer, helping to prevent overheating. For improved wear and consistent performance in distributorless ignition systems, these plugs also include a platinum pad on the ground electrode. The trivalent metal plating on the exterior helps resist corrosion and makes them easier to remove later on. A pure copper core is also integrated to aid in heat removal, further supporting reliable operation and starting.

These spark plugs fit a wide range of Can-Am Spyder and Ski-Doo models. It's always a good idea to double-check the fitment for your specific year and model to ensure you're getting the right part.