What makes Ruthenium spark plugs different from standard platinum plugs?

Ruthenium spark plugs, like these NGK HX models, use a Ruthenium alloy for the center electrode, which is known for its extreme durability and ability to maintain a fine wire tip. This allows for a more concentrated spark and improved ignitability compared to standard platinum plugs.

How many spark plugs do I need for my vehicle?

This box contains four spark plugs. Most 4-cylinder engines use four spark plugs. If your vehicle has a different number of cylinders, you will need to purchase the appropriate quantity to match.

What does 'High Ignitability' mean for a spark plug?

High Ignitability means the spark plug is designed to create a stronger, more consistent spark. This helps ensure a complete fuel burn, leading to benefits like quicker throttle response, smoother idling, and easier cold starts, especially in modern engines.

NGK Ruthenium HX Spark Plug (LFR6AHX-S)

Name: NGK Ruthenium HX Spark Plug (LFR6AHX-S)
Brand: NGK
SKU: ngk-ngk-ruthenium-hx-spark-plug-lfr6ahx-s-pa-ng94122
Price: 212.69 USD
Availability: InStock

$212.69

In Stock

NGK Ruthenium HX Spark Plug Box of 4 (LFR6AHX-S). Features advanced tip technology for improved performance and longevity.

Key Features

Fits a wide range of modern vehicles including Acura, BMW, Honda, Lexus, and Subaru.
Features a 0.4mm Ruthenium alloy fine wire center electrode and 0.8mm platinum fine wire ground electrode for improved ignitability.
Patented DFE (Double Fine Electrode) design concentrates spark energy for better performance across various air-fuel ratios.
Pure alumina silicate ceramic insulator provides superior strength and better heat transfer.
Trivalent metal plating offers superior resistance to corrosion and seizing.
Corrugated ribs on the insulator help prevent flashover.

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Will this fit your vehicle?

Product Details

When you're looking to get the most out of your modern vehicle's engine, a fresh set of spark plugs can make a big difference. These NGK Ruthenium HX spark plugs are designed to provide a more complete fuel burn, which can lead to a quicker throttle response, a smoother idle, and better cold starts. They're a solid option for many vehicles from brands like Honda, BMW, and Lexus, offering updated technology for improved engine operation.

What sets these plugs apart is their patented Ruthenium technology. The center electrode uses a 0.4mm Ruthenium alloy fine wire, paired with a 0.8mm platinum fine wire on the ground electrode. This Double Fine Electrode (DFE) design helps concentrate spark energy, igniting a wider range of air-fuel mixtures, whether your engine is running rich or lean. The pure alumina silicate ceramic insulator offers superior strength and helps with heat transfer, while the trivalent metal plating resists corrosion and seizing, making installation and removal easier down the road. The corrugated ribs on the insulator also help prevent flashover, ensuring a consistent spark.

This box includes four spark plugs, which is the correct quantity for most 4-cylinder engines. If your vehicle requires more or fewer, you'll need to adjust your order accordingly. They are designed as a high ignitability plug, ideal for newer engines that demand this type of performance.