How many spark plugs are included in this box?

This product is a box containing four NGK Iridium IX spark plugs. You'll need to order in multiples of four if your vehicle requires more than one set.

What makes iridium spark plugs different from standard ones?

Iridium is an extremely hard metal, six times harder than platinum. This allows for a much finer center electrode tip, which creates a stronger, more consistent spark and offers greater durability over time compared to standard nickel or platinum plugs.

Are these spark plugs suitable for everyday use or just performance vehicles?

While designed with performance in mind, these NGK Iridium IX plugs can be used as an upgrade for many standard applications. Their improved ignitability and durability offer benefits like better starting and fuel efficiency for a wide range of vehicles.

NGK Iridium IX Spark Plug BR9HIX Box of 4

Name: NGK Iridium IX Spark Plug Box of 4 (BR9HIX)
Brand: NGK
Price: 36.10 USD
Availability: InStock

NGK Iridium IX Spark Plug Box of 4 (BR9HIX)

$36.10

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

NGK Iridium IX Spark Plug Box of 4 (BR9HIX). Features a fine iridium tip for durable spark and improved performance.

Key Features

This product is a box of four NGK Iridium IX spark plugs.
Features a fine iridium tip on the center electrode for durable and consistent spark.
Tapered cut ground electrode helps improve starting, idling, and throttle response.
Trivalent metal plating offers superior resistance to corrosion and seizing.
Designed for modified or high-performance applications, or as an upgrade to OE plugs.
Suitable for a wide range of motorcycle and snowmobile applications.

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Will this fit your vehicle?

Product Details

What you get here is a box of four NGK Iridium IX spark plugs, part number BR9HIX. These are designed to give your engine a more reliable spark, which can lead to better acceleration and smoother running. They're a good choice for modified or high-performance applications, or simply as an upgrade over standard nickel alloy plugs.

The key to these plugs is the fine iridium tip on the center electrode. Iridium is a very hard metal, much harder than platinum, which means it holds up longer and maintains a consistent gap. This fine tip helps with ignitability, meaning it's easier for the spark to jump across, leading to improved starting and idling. Plus, the tapered cut on the ground electrode is designed to help prevent fouling, keeping your plugs firing cleanly even in demanding conditions. The metal plating on the plug body also helps resist corrosion and makes them easier to remove later on.

These plugs are suitable for a wide range of vehicles, including many Cobra, Kawasaki, and Ski-Doo models. If you're looking to get the most out of your engine's ignition system, these NGK Iridium IX plugs are a solid option.