What makes iridium spark plugs different from platinum?

Iridium is a much harder metal with a higher melting point than platinum. This allows for a finer, more durable center electrode that can create a more consistent and stable spark over a longer lifespan.

Do these spark plugs come with anti-seize pre-applied?

These NGK spark plugs feature trivalent metal plating for superior anti-corrosion and anti-seizing properties. Always refer to your vehicle's service manual for specific installation recommendations, including whether to use additional anti-seize compound.

How many spark plugs do I need for my vehicle?

This is a box of four (4) spark plugs. You will need to check your vehicle's specifications to determine the total number of spark plugs required for your engine.

NGK Laser Iridium Spark Plug IFR5N10 7866 - Multi-Vehicle

Name: NGK Laser Iridium Spark Plug Box of 4 (IFR5N10)
Brand: NGK
Price: 54.49 USD
Availability: InStock

NGK Laser Iridium Spark Plug Box of 4 (IFR5N10)

$54.49

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 plugs offer durability and a stable spark. Features an iridium center electrode and platinum ground pad.

Key Features

Fits a wide range of Jaguar and Land Rover vehicles.
Iridium alloy center electrode offers high durability and a stable spark.
Platinum pad on the ground electrode promotes even wear in distributorless ignition systems.
Pure alumina silicate ceramic insulator provides superior strength and heat transfer.
Trivalent metal plating resists corrosion and seizing.
Copper core aids in heat removal to prevent overheating.

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

Product Details

The center electrode on these NGK Laser Iridium spark plugs is made from an iridium alloy, which has an extremely high melting point and is six times harder than platinum. This design is specifically made for modern, high-tech engines where a stable spark is crucial for performance and longevity. These are actual OE or equivalent replacement spark plugs, meaning they meet the same standards as what came on your vehicle from the factory.

NGK uses a pure alumina silicate ceramic insulator for superior strength and better heat transfer, helping to prevent overheating. For vehicles with distributorless ignition systems, you'll find a platinum pad on the ground electrode that helps ensure even wear over time. The trivalent metal plating on the plug body helps resist corrosion and seizing, making them easier to remove down the road. These plugs are a solid option for a wide range of vehicles, including many Jaguar and Land Rover models.

The pure copper core in these plugs aids in heat removal, and triple seals are used to prevent any leakage. If your vehicle originally came with fine wire iridium alloy plugs, these NGK Laser Iridium plugs are a direct replacement that will help maintain original performance.