NGK Laser Iridium Spark Plug Box of 4 (ILTR6H8G)

NGK is well-known for making reliable ignition components, and their Laser Iridium spark plugs are a prime example. If you're looking to replace the spark plugs in your 2011-2019 Ford Fiesta, these are built to meet or exceed the original equipment specifications. They are designed to provide a long service life and a consistent, strong spark, which is crucial for smooth engine operation and efficient fuel combustion.

What sets these plugs apart is the iridium alloy used for the center electrode. This material has a very high melting point and is significantly harder than platinum, offering up to six times the durability. This means they can handle the heat and stress of modern engines while maintaining a stable spark over many miles. The pure alumina silicate ceramic insulator helps with heat transfer away from the plug, and the copper core further aids in keeping things cool. You'll also find a platinum pad on the ground electrode, which helps ensure even wear, especially in distributorless ignition systems.

These plugs also feature trivalent metal plating, which helps prevent corrosion and makes them easier to remove down the road. They come with triple seals to prevent any leaks. For your Fiesta, these are a solid option if your original plugs were also fine-wire iridium type.