NGK 90174 Spark Plug

Overview of NGK Laser Iridium High Ignitability Spark Plug 90174

The NGK Laser Iridium High Ignitability Spark Plug 90174 is engineered for reliable ignition performance in select INFINITI and Nissan vehicles. 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
• Iridium center electrode tip for durability and stable spark
• Copper core center electrode for optimal conductivity
• Standard ground configuration with nickel ground electrode core
• Pre-gap size of 0.044 inches for precise spark gap
• Flat seat type with 12 mm thread diameter and 26.5 mm reach
• Non-removable nut electrical terminal type
• Hex size 14 mm for installation compatibility
• Manufacturer heat range rating of 8

Details on the Laser Iridium High Ignitability Spark Plug Line

The Laser Iridium High Ignitability Spark Plug line by NGK focuses on delivering improved ignition performance through a dual fine electrode design and iridium-tipped center electrodes. This combination enhances spark efficiency and durability, making it suitable for vehicles requiring precise ignition timing and stable combustion, such as the Nissan 370Z and INFINITI Q50.

Technical Description and Specifications

This NGK spark plug features a copper core center electrode with an iridium tip, which provides excellent electrical conductivity and wear resistance. The ground electrode uses a nickel core with a dual fine electrode tip design to improve ignitability and reduce voltage requirements. The pre-gap is set at 0.044 inches, ensuring optimal spark gap for efficient combustion. The spark plug has a flat seat type, 12 mm thread diameter, and a reach of 26.5 mm, matching OEM specifications for compatible INFINITI and Nissan models. The non-removable nut terminal and 14 mm hex size facilitate straightforward installation.

Compatible Vehicles and Common Applications

• Designed for INFINITI models including Q40, Q50, Q60, Q70, Q70L, FX37, EX37, M37, QX50, and QX70
• Compatible with Nissan 370Z and G37 models
• Addresses ignition issues such as misfires, rough idling, and poor fuel efficiency
• Suitable for vehicles requiring a heat range of 8 spark plugs

Installation Notes and Tips

• Ensure the spark plug gap is set to 0.044 inches before installation if adjustment is necessary
• Use a 14 mm socket wrench for proper torque application
• Verify thread diameter and reach to match vehicle specifications to avoid engine damage
• Apply anti-seize compound sparingly on threads if recommended by vehicle manufacturer

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards for ignition components. The Laser Iridium High Ignitability Spark Plug 90174 undergoes rigorous testing to ensure durability and consistent performance. While specific warranty details may vary, NGK typically offers coverage against manufacturing defects. Refer to NGK documentation for exact warranty terms.