NGK 5266 Spark Plug

NGK Laser Iridium Spark Plug Overview

The NGK Laser Iridium Spark Plug 5266 is engineered for reliable ignition performance in Honda Civic vehicles. Designed with advanced materials and precise specifications, this spark plug supports efficient combustion and consistent engine operation.

• Iridium center electrode tip for enhanced durability
• Trapezoid ground electrode tip design for stable spark
• Copper core center electrode for improved conductivity
• Standard ground configuration with nickel ground electrode core
• Non-removable nut electrical terminal type
• Pre-gap size of 0.044 inches for optimal spark gap
• Flat seat type with 0.75-inch reach and 14mm thread diameter
• Hex size of 5/8 inch for installation compatibility
• Manufacturer heat range rating of 6

About the NGK Laser Iridium Spark Plug Line

The Laser Iridium Spark Plug line by NGK is designed to provide precise ignition and long service life through the use of iridium-tipped electrodes. This technology reduces electrode wear and maintains consistent spark performance, which is critical for maintaining engine efficiency and emissions standards. The 5266 part number is a specific fitment within this line, tailored for Honda Civic models requiring a heat range 6 spark plug with a flat seat and trapezoid ground electrode tip.

Detailed Product Description

This NGK Laser Iridium Spark Plug 5266 features a copper core center electrode that enhances electrical conductivity, paired with an iridium tip to resist wear and maintain a stable spark over time. The trapezoid ground electrode tip design improves spark stability and combustion efficiency. The spark plug’s standard ground configuration and nickel ground electrode core provide durability under typical operating conditions. With a pre-gap size of 0.044 inches and a flat seat type, this spark plug ensures proper fit and optimal ignition in compatible Honda Civic engines. The non-removable nut electrical terminal type simplifies installation and reduces the risk of terminal damage.

Compatible Vehicles and Common Applications

• Compatible with Honda Civic models requiring NGK part number 5266
• Addresses ignition misfires and rough idling issues
• Helps improve fuel efficiency and engine responsiveness
• Supports stable combustion to reduce emissions
• Suitable for replacement during routine maintenance or performance tuning

Installation Notes and Tips

When installing the NGK Laser Iridium Spark Plug 5266, ensure the spark plug gap is set to the manufacturer’s specification of 0.044 inches if adjustment is necessary. Use a torque wrench to tighten the spark plug to the recommended torque to avoid damage to the threads or seat. The 5/8 inch hex size allows for standard spark plug socket compatibility. Inspect the spark plug hole for debris before installation to ensure proper seating and sealing.

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring consistent performance and durability. The Laser Iridium Spark Plug line undergoes rigorous testing for heat range accuracy and electrode wear resistance. While specific warranty details for part number 5266 may vary, NGK typically offers coverage against manufacturing defects. Refer to NGK’s official documentation for warranty terms applicable to this spark plug.