NGK 90495 Spark Plug

Reliable Ignition Performance for Select Vehicles

The NGK Ruthenium HX High Ignitability Spark Plug (part number 90495) is engineered to deliver consistent ignition and improved combustion efficiency. Designed for compatibility with a range of vehicles including Buick, Cadillac, Chevrolet, Ford, GMC, Jaguar, Land Rover, Lincoln, and Mazda models, this spark plug supports optimal engine performance.

• Ruthenium center electrode tip for enhanced ignitability
• Projected square platinum ground electrode for stable spark
• Copper core materials in both center and ground electrodes for efficient conductivity
• Standard ground configuration with a single ground electrode
• Non-removable nut electrical terminal type for secure connection
• Pre-gap size of 0.032 inches for precise spark gap
• Tapered seat type and 14mm thread diameter for proper fitment
• Hex size of 5/8 inch and insulator height of 52.5 mm
• Manufacturer heat range rating of 6 for balanced heat dissipation
• Reach length of 25 mm suitable for specified engine designs

About the Ruthenium HX High Ignitability Spark Plug Line

The Ruthenium HX High Ignitability Spark Plug line from NGK focuses on delivering improved ignition performance through advanced electrode materials and design. The use of ruthenium on the center electrode tip enhances spark initiation, while the projected square platinum ground electrode supports stable combustion. This combination is intended to provide reliable starts and efficient fuel burn in compatible vehicles.

Technical Details and Compatibility

This spark plug features a copper core in both the center and ground electrodes, which aids in effective electrical conductivity and heat transfer. The single ground electrode with a projected square platinum tip is designed to maintain a consistent spark, reducing misfires. The non-removable nut terminal ensures a secure electrical connection, and the pre-gap of 0.032 inches is optimized for the ignition system requirements of various models.

Compatible with multiple makes and models such as the Ford F-150, Chevrolet Camaro, Buick Regal, Land Rover Discovery Sport, and Mazda CX-7, the NGK 90495 spark plug fits vehicles requiring a 14mm thread diameter, 25mm reach, and a heat range of 6.

Applications and Problem Solving

• Improves ignition reliability in vehicles experiencing misfires or rough starts
• Enhances combustion efficiency for better fuel economy
• Reduces electrode wear for longer service intervals
• Supports stable engine performance under various driving conditions
• Helps maintain proper spark gap for consistent ignition timing

Installation Notes and Tips

• Verify vehicle compatibility with part number 90495 before installation
• Ensure the spark plug gap is set to 0.032 inches if adjustment is necessary
• Use a torque wrench to tighten to manufacturer specifications to avoid damage
• Inspect ignition components for wear or damage during replacement
• Replace spark plugs in sets to maintain balanced engine performance

Quality Assurance and Warranty

NGK spark plugs, including the Ruthenium HX High Ignitability line, are manufactured to meet strict quality standards for durability and performance. The use of high-grade materials such as ruthenium and platinum ensures consistent ignition characteristics. While specific warranty details may vary, NGK products typically come with manufacturer-backed quality assurance to support reliable operation in compatible vehicles.