What makes iridium spark plugs last longer than platinum ones?

Iridium has a much higher melting point than platinum, allowing it to withstand the extreme temperatures and pressures inside an engine cylinder more effectively. This durability means the electrode wears down much slower over time.

Does this box of spark plugs include everything needed for a tune-up?

This is a box of four NGK Laser Iridium spark plugs. Depending on your vehicle's engine, you may need more or fewer plugs for a complete tune-up. Please check your vehicle's specifications to confirm the correct number of spark plugs required.

What is the benefit of the trivalent metal plating on the spark plug exterior?

The trivalent metal plating provides excellent resistance to corrosion and helps prevent the spark plug from seizing in the cylinder head. This makes them easier to remove during future maintenance.

NGK Ignition Spark Plugs IFR6E-11 | Part 6741

Name: NGK Iridium/Platinum Spark Plug Box of 4 (IFR6E-11)
Brand: NGK
Price: 54.41 USD
Availability: InStock

NGK Iridium/Platinum Spark Plug Box of 4 (IFR6E-11)

$54.41

Only 1 left in stock

NGK Laser Iridium spark plugs offer performance and longevity. Box of 4, Part# 6741. Fits a wide range of vehicles.

Key Features

Fits a wide range of vehicle makes and models.
Iridium tipped center electrode offers six times the durability of platinum.
Fine wire center electrode ensures a stable spark and high durability.
Pure alumina silicate ceramic insulator provides superior strength and heat transfer.
Trivalent metal plating offers superior anti-corrosion and anti-seizing properties.
Platinum pad on the ground electrode promotes even wear in distributorless ignition systems.

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Will this fit your vehicle?

Product Details

NGK is well-known for making reliable ignition components, and their Laser Iridium spark plugs are a prime example of that. These plugs are built to be a direct OE replacement, meaning they are designed to perform just like the original plugs your vehicle came with. They combine the durability of iridium with the stable spark characteristics of platinum to give you a part that lasts and performs consistently.

The center electrode on these plugs features an iridium tip, which is significantly harder than platinum and can handle the high temperatures and pressures found in modern engines. This fine wire design helps ensure a strong, stable spark every time. The pure alumina ceramic insulator is strong and transfers heat well, while the trivalent metal plating on the outside helps prevent corrosion and seizing, making them easier to remove down the road. Most of these plugs also have a platinum pad on the ground electrode for even wear, especially in distributorless ignition systems.

This set includes four spark plugs, which is what many vehicles need for a full tune-up. They are a solid option for a wide variety of vehicles, including many Acura Integras, Mitsubishi 3000GTs, and Chevrolet Aveos, among others. If you're looking to replace your spark plugs with a part that offers improved longevity and a consistent spark, these NGK Laser Iridiums are a great choice.