What is the main benefit of using iridium spark plugs?

Iridium spark plugs, like these NGK Iridium IX plugs, feature a fine iridium center electrode. This material has a very high melting point and is extremely durable, ensuring a consistent and strong spark over a longer period compared to standard nickel plugs.

Do these spark plugs come pre-gapped?

NGK Iridium IX spark plugs are typically pre-set from the factory to the correct gap for many applications. However, it's always recommended to check your vehicle's specific gap requirements in the owner's manual and adjust if necessary before installation.

What does 'trivalent metal plating' mean for these spark plugs?

The trivalent metal plating on the exterior of the spark plug helps protect it from corrosion and makes it easier to remove during future maintenance. This anti-seizing property is particularly useful in preventing the plug from getting stuck in the cylinder head.

NGK Iridium IX Spark Plug LFR5AIX-11 (4469)

Name: NGK Iridium Spark Plug Box of 4 (LFR5AIX-11)
Brand: NGK
Price: 8.04 USD
Availability: InStock

NGK Iridium Spark Plug Box of 4 (LFR5AIX-11)

$8.04

In Stock

NGK Iridium Spark Plug Box of 4 (LFR5AIX-11). Fine iridium tip ensures durable and consistent spark.

Key Features

Fits 71+ vehicle make/model combinations.
Fine iridium tip ensures durable and consistent spark.
Trivalent metal plating offers superior anti-corrosion and anti-seizing properties.
Tapered cut ground electrode improves starting, idling, and throttle response.
Iridium alloy's high melting point is perfect for today's high-temperature engines.
Provides outstanding acceleration, high fuel efficiency, and durability.

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Will this fit your vehicle?

Product Details

The iridium alloy in these NGK spark plugs has an extremely high melting point, making it well-suited for today's hotter-running engines. These Iridium IX plugs are designed to offer improved acceleration, better fuel efficiency, and longer life compared to standard nickel alloy plugs. The fine iridium center electrode ensures a durable and consistent spark, which helps with starting, idling, and throttle response.

NGK uses a trivalent metal plating on the exterior of the plug, which helps prevent corrosion and makes them easier to remove later on. The tapered cut ground electrode is another design choice aimed at improving starting and idling performance. These plugs are a solid option for upgrading your vehicle's ignition system, especially if you're looking for a more robust spark than what stock plugs offer. They are suitable for modified or high-performance applications, or simply as an upgrade for everyday drivers.

This is a box of four spark plugs, which is the correct quantity for many common V6 and V8 engines. Always check your vehicle's service manual to confirm the exact number of spark plugs required and the correct gap setting.