NGK 4458 Spark Plug

NGK Laser Iridium Spark Plug Overview

The NGK Laser Iridium Spark Plug 4458 is engineered for reliable ignition performance in Honda Civic models. Designed with advanced materials and precise specifications, this spark plug supports efficient combustion and consistent engine operation.

• Part Number: 4458 (Ilfr6j-11k)
• Center Electrode Tip Material: Iridium for durability and stable spark
• Ground Electrode Tip Design: Trapezoid for optimized spark exposure
• Resistance: 5000 ohms to reduce electrical noise
• Thread Diameter: 14.00 mm with 26.5 mm reach
• Hex Size: 5/8 inch for standard installation tools
• Pre-Gap Size: 0.044 inches for precise ignition timing
• Manufacturer Heat Range: 6 suitable for Honda Civic engine requirements

Detailed Features of the NGK Laser Iridium Spark Plug

This NGK spark plug features a copper core center electrode with an iridium tip, enhancing durability and providing a stable, efficient spark. The trapezoid ground electrode tip design improves ignition reliability by optimizing the spark gap exposure. The single ground electrode is made from nickel, ensuring consistent conductivity and wear resistance. The spark plug includes a non-removable nut electrical terminal type and a flat seat design, which supports proper sealing and fitment in the combustion chamber. With a 50.50 mm insulator height and a 14 mm thread diameter, this spark plug is engineered to meet the precise specifications required for Honda Civic engines.

About the NGK Laser Iridium Spark Plug Line

The Laser Iridium Spark Plug line by NGK is designed to provide enhanced ignition performance and longevity. Iridium tips offer a fine electrode that requires less voltage to generate a spark, improving fuel efficiency and reducing misfires. This product line balances durability with performance, making it suitable for vehicles like the Honda Civic that demand consistent ignition under various driving conditions.

Applications and Common Issues Addressed

• Compatible with Honda Civic models requiring part number 4458
• Helps resolve engine misfires and rough idling
• Improves cold start performance and throttle response
• Reduces spark plug fouling and carbon buildup
• Supports stable combustion for better fuel economy

Installation Notes and Tips

When installing the NGK Laser Iridium Spark Plug 4458, ensure the spark plug gap is set to the manufacturer’s recommended 0.044 inches if adjustment is necessary. Use a torque wrench to tighten the spark plug to the specified torque to avoid damage to the threads or improper sealing. The 5/8 inch hex size allows for compatibility with common spark plug sockets. Always inspect the spark plug threads and seat type to confirm proper fitment in the Honda Civic engine.

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Laser Iridium Spark Plug 4458 undergoes rigorous testing for heat range, resistance, and electrode integrity. While specific warranty details are not provided here, NGK products typically come with manufacturer-backed quality assurance to support long-term use in compatible vehicles.