What makes the iridium center electrode better than platinum?

Iridium has an extremely high melting point, making it very durable. The fine wire iridium-tipped center electrode in these NGK plugs provides a consistently stable spark and lasts much longer than traditional platinum plugs.

Does this box include all the spark plugs I need for my Ski-Doo 900 ACE?

This is a box of four NGK Laser Iridium spark plugs. Most Ski-Doo models with the 900 ACE engine use four spark plugs, so this box should contain the correct quantity for your application.

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

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

NGK MR8BI-8 Laser Iridium Spark Plug 91360

Name: NGK Laser Iridium Spark Plug Box of 4 (MR8BI-8)
Brand: NGK
Price: 58.83 USD
Availability: InStock

NGK Laser Iridium Spark Plug Box of 4 (MR8BI-8)

$58.83

Only 4 left in stock

NGK Laser Iridium Spark Plug Box of 4 (MR8BI-8). Offers improved performance and longevity with a durable iridium-tipped center electrode.

Key Features

Fits various 2015-2019 Ski-Doo models with the 900 ACE engine.
Iridium-tipped center electrode offers superior durability and a stable spark.
Platinum pad on the ground electrode ensures even wear in distributorless ignition systems.
Pure alumina silicate ceramic insulator provides strength and efficient heat transfer.
Copper core aids in heat removal to prevent overheating.
Trivalent metal plating offers excellent anti-corrosion and anti-seizing properties.

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Will this fit your vehicle?

Product Details

NGK Laser Iridium spark plugs are a solid option for your Ski-Doo snowmobile, offering a great balance of performance and how long they last. These are actual OE or equivalent replacements, meaning they're built to the same standards as what came on your machine from the factory. The fine wire center electrode is made with an iridium alloy, which has a very high melting point and provides a stable spark, helping your engine run smoothly and efficiently.

What makes these plugs stand out is the iridium-tipped center electrode, which is significantly harder than platinum, giving you improved durability. You'll also find a platinum pad on the ground electrode, which helps ensure even wear, especially in modern distributorless ignition systems. The pure alumina silicate ceramic insulator is strong and helps transfer heat away from the plug, while the copper core further aids in heat removal. Plus, the trivalent metal plating on the threads helps prevent corrosion and makes them easier to remove down the road.

This box includes four spark plugs, which is what most 900 ACE engines require. They're designed to fit a range of Ski-Doo models from 2015 through 2019, like the Expedition and Renegade series.