NGK 95839 Spark Plug

Overview of NGK Ruthenium HX High Ignitability Spark Plug 95839

The NGK Ruthenium HX High Ignitability Spark Plug (part number 95839) is engineered for reliable ignition performance in a wide range of vehicles including Acura, Honda, Toyota, and BMW models. Designed with advanced materials and precise specifications, this spark plug supports efficient combustion and consistent engine operation.

• Dual fine electrode ground tip for enhanced ignitability
• Ruthenium center electrode tip for durability and stable spark
• Copper core center electrode for optimal conductivity
• Standard ground configuration with nickel ground electrode core
• Non-removable nut electrical terminal for secure connection
• Pre-gap size of 0.044 inches for precise spark gap
• Flat seat type with 14mm thread diameter and 0.75 inch reach
• Manufacturer heat range rating of 5 for balanced heat dissipation
• Hex size of 5/8 inch for installation with common tools

Detailed Product Features and Specifications

The NGK Ruthenium HX High Ignitability Spark Plug 95839 features a dual fine electrode ground tip design that improves ignition efficiency by providing a more focused spark. The center electrode is constructed with a copper core for excellent electrical conductivity, while the tip is coated with ruthenium, a durable precious metal that enhances spark stability and longevity. The ground electrode core is made of nickel, offering reliable wear resistance. This spark plug has a pre-set gap of 0.044 inches, ensuring optimal combustion timing and performance.

Its flat seat design and 14mm thread diameter make it compatible with many popular vehicle models, including the Toyota 4Runner, Honda Accord, and BMW 850Ci. The heat range of 5 balances heat dissipation to prevent fouling and overheating under normal driving conditions. The non-removable nut terminal type ensures a secure electrical connection, reducing the risk of misfires.

About the Ruthenium HX High Ignitability Spark Plug Line

The Ruthenium HX High Ignitability Spark Plug line by NGK is designed to provide enhanced ignition performance through the use of ruthenium-tipped electrodes and advanced electrode designs. This product line focuses on improving ignitability and durability, making it suitable for secondary ignition systems in a variety of passenger vehicles. The 95839 spark plug exemplifies these qualities with its dual fine electrode and copper core construction.

Applications and Common Issues Addressed

• Improves ignition reliability in Acura, Honda, Toyota, and BMW vehicles
• Reduces misfires caused by electrode wear or poor spark quality
• Helps maintain fuel efficiency by ensuring consistent combustion
• Prevents fouling and overheating with appropriate heat range
• Supports smooth engine start and stable idle performance

Installation Notes and Tips

• Verify compatibility with your vehicle’s make and model before installation
• Use a 5/8 inch socket wrench for proper tightening of the spark plug
• Check and maintain the pre-gap size of 0.044 inches if adjustment is necessary
• Apply anti-seize compound sparingly on threads to prevent galling
• Torque to manufacturer specifications to avoid damage to the spark plug or cylinder head

Quality Assurance and Warranty

NGK spark plugs, including the Ruthenium HX High Ignitability Spark Plug 95839, are manufactured to meet strict quality standards for durability and performance. While specific warranty details may vary, NGK products typically come with a limited warranty against manufacturing defects. Using genuine NGK spark plugs helps ensure consistent engine performance and longevity.