What is the main benefit of Ruthenium in these spark plugs?

Ruthenium is a precious metal alloy used in the center electrode for its exceptional durability. This allows for a fine wire design that promotes better ignitability and a longer service life compared to standard spark plugs.

What does 'High Ignitability' mean for my engine?

High Ignitability means the spark plug is designed to create a stronger, more consistent spark. This can result in a more complete fuel burn, leading to improved throttle response, smoother idling, and easier cold starts.

Does this set include everything needed for installation?

This product is a box of four NGK Ruthenium HX spark plugs. While the plugs themselves are included, you will need appropriate tools and potentially anti-seize compound or dielectric grease for proper installation, which are sold separately.

NGK Ruthenium HX Spark Plug (TR4BHX)

Name: NGK Ruthenium HX Spark Plug (TR4BHX)
Brand: NGK
SKU: ngk-ngk-ruthenium-hx-spark-plug-tr4bhx-pa-ng97100
Price: 95.62 USD
Availability: InStock

$95.62

In Stock

NGK Ruthenium HX Spark Plug Box of 4 (TR4BHX) H. I. Spark Plug

Key Features

This product is a box of four NGK Ruthenium HX spark plugs.
Features a 0.4mm Ruthenium alloy fine wire center electrode and a 0.8mm platinum fine wire ground electrode.
The pure alumina silicate ceramic insulator provides superior strength and better heat transfer.
Trivalent metal plating offers superior anti-corrosion and anti-seizing properties.
A copper core is integrated to aid in heat removal.
Designed for modern vehicles demanding high ignitability, often as an aftermarket upgrade for OE PSPE type plugs.

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Will this fit your vehicle?

Product Details

This is a box of four NGK Ruthenium HX spark plugs, part number TR4BHX. These plugs are built with a patented Ruthenium alloy center electrode and a platinum fine wire ground electrode, designed for modern engines that require high ignitability. The specialized tip technology aims to provide a more complete fuel burn, which can lead to quicker throttle response, a smoother idle, and better performance during cold starts. They fit a range of vehicles, including many Buick, Chevrolet, and GMC models from the late 90s through the mid-2010s.

The Ruthenium center electrode is known for its durability, offering a longer service life compared to standard plugs. NGK's Double Fine Electrode (DFE) design helps concentrate spark energy, igniting a wider range of air-fuel mixtures, which is beneficial in both rich and lean engine conditions. The pure alumina silicate ceramic insulator offers superior strength and effective heat transfer, while the trivalent metal plating on the plug body helps prevent corrosion and seizing during installation or removal. A copper core is also included to aid in heat dissipation.