NGK 6507 Spark Plug

NGK Laser Iridium Spark Plug Overview

The NGK Laser Iridium Spark Plug 6507 is engineered for reliable ignition performance across a wide range of vehicles including Audi, Volkswagen, Nissan, and Subaru models. Designed with advanced iridium technology, this spark plug ensures consistent combustion and efficient engine operation.

• Iridium center electrode tip for enhanced durability and ignition
• Copper core center electrode for improved conductivity
• Standard ground electrode with nickel core material
• Non-removable nut electrical terminal type
• Pre-gapped to .032 inches for optimal spark
• Flat seat type with 14mm thread diameter and 0.75 inch reach
• Hex size of 5/8 inch for easy installation
• Manufacturer heat range rating of 6

Detailed Features and Specifications

The NGK Laser Iridium Spark Plug 6507 features a single ground electrode with a standard design and nickel core material, providing stable grounding and longevity. The center electrode combines a copper core for excellent electrical conductivity with an iridium tip that resists wear and maintains a sharp spark over time. The spark plug’s resistance is rated at 5000 ohms, helping to reduce electrical noise and protect ignition components. Its flat seat design and 14mm thread diameter ensure compatibility with many OEM engine configurations. The pre-gap size of .032 inches is factory set to optimize ignition timing and combustion efficiency.

Compatible Vehicles and Applications

This spark plug is compatible with a variety of makes and models, including Audi 90 Quattro and A8 Quattro, Volkswagen Golf and Jetta, Nissan Pathfinder and Pickup, Subaru Impreza and Legacy, as well as models from Chrysler, Dodge, Hyundai, Isuzu, Jaguar, Kia, Mitsubishi, Plymouth, Pontiac, Porsche, Saab, Suzuki, and Volvo. The part number IFR6B corresponds to NGK’s Laser Iridium Spark Plug 6507, designed for secondary ignition systems in these vehicles.

• Improves ignition reliability in older or high-mileage engines
• Reduces misfires and rough idling
• Enhances fuel efficiency by promoting complete combustion
• Minimizes electrode wear for longer service intervals
• Helps maintain stable engine performance under various conditions

Installation Notes and Tips

Before installation, verify the spark plug gap is set to .032 inches as specified. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended torque to avoid damage to the threads or seat. The 5/8 inch hex size allows for standard spark plug socket compatibility. Ensure the ignition system is off and the engine is cool before replacing spark plugs. NGK’s non-removable nut terminal type requires no additional terminal adjustments.

Quality Assurance and Warranty

NGK’s Laser Iridium Spark Plug line is manufactured to meet strict quality standards, ensuring consistent performance and durability. The iridium tip and copper core design contribute to long service life and reliable ignition. While specific warranty details may vary, NGK products typically come with manufacturer-backed quality assurance to support proper function and fitment.