What makes Ruthenium HX spark plugs different from standard plugs?

Ruthenium HX plugs use a patented Ruthenium alloy for the center electrode, which is more durable and offers higher ignitability than standard materials. This advanced tip technology helps achieve a more complete fuel burn for improved engine performance.

Do these spark plugs come with anti-seize lubricant?

These spark plugs feature trivalent metal plating which provides superior anti-corrosion and anti-seizing properties, reducing the need for additional lubricant during installation. Always refer to the vehicle manufacturer's service manual for specific installation instructions.

How many spark plugs are included in a box?

Each box contains four (4) NGK Ruthenium HX spark plugs, suitable for most 4-cylinder engines or as replacements for specific 6-cylinder applications.

NGK Ruthenium HX Spark Plug Box of 4 LFR5AHX 96355

Name: NGK Ruthenium HX Spark Plug Box of 4 (LFR5AHX)
Brand: NGK
Price: 11.96 USD
Availability: InStock

NGK Ruthenium HX Spark Plug Box of 4 (LFR5AHX)

$11.96

In Stock

NGK Ruthenium HX Spark Plug Box of 4 (LFR5AHX). Offers improved performance and longer life for modern engines.

Key Features

Fits 69+ vehicle make/model combinations.
Features a 0.4mm Ruthenium alloy fine wire center electrode and a 0.8mm platinum fine wire ground electrode for high ignitability.
Patented DFE and PSPE tip designs promote a more complete fuel burn, leading to improved throttle response, smoother idle, and better cold starts.
The Ruthenium center electrode offers industry-leading durability.
Pure alumina silicate ceramic insulator provides superior strength and better heat transfer.
Trivalent metal plating offers superior anti-corrosion and anti-seizing properties.

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Will this fit your vehicle?

Product Details

If you're looking to get the most out of your modern engine, especially if it demands high ignitability, these NGK Ruthenium HX spark plugs are a solid option. They're built with advanced OE technology, featuring a patented Ruthenium alloy center electrode and a platinum ground electrode. This setup is designed to concentrate spark energy, leading to a more complete fuel burn. You might notice a quicker throttle response, a smoother idle, and better performance when the engine is cold.

The Ruthenium center electrode is known for its impressive durability, and the double fine electrode design helps ignite a wider range of air-fuel mixtures, which is beneficial whether your engine is running a bit rich or lean. The pure alumina silicate ceramic insulator offers superior strength and helps manage heat effectively, while the trivalent metal plating resists corrosion and seizing. Plus, the corrugated ribs on the insulator help prevent flashover, ensuring a consistent spark.

These plugs are a great choice for newer vehicles that originally used OE DFE type spark plugs, or for anyone wanting the latest in spark plug technology. They come in a box of four, ready to be installed on a wide range of vehicles including many Chrysler, Dodge, Jeep, Nissan, and Toyota models.