NGK 4218 Spark Plug

NGK Iridium IX Spark Plug Overview

The NGK Iridium IX Spark Plug 4218 is engineered for precision ignition performance in the Ferrari F355 Berlinetta. Designed with advanced materials and specifications, this spark plug supports reliable combustion and efficient engine operation.

• Iridium center electrode tip for enhanced durability
• Taper cut ground electrode tip design for improved ignition
• Copper core center electrode for optimal conductivity
• Standard ground configuration with nickel ground electrode core
• Removable nut electrical terminal type for easy installation
• Pre-gap size of 0.032 inches for precise spark gap
• Flat seat type and 0.75 inch reach for proper fitment
• Hex size of 5/8 inch for standard tool compatibility
• Manufacturer heat range 8 suitable for Ferrari F355 Berlinetta

Detailed Product Description

The NGK Iridium IX Spark Plug 4218 (part number Cr8eix) is specifically designed to meet the ignition requirements of the Ferrari F355 Berlinetta. Featuring an iridium center electrode tip, this spark plug offers a fine electrode that improves ignitability and wear resistance. The copper core center electrode enhances electrical and thermal conductivity, ensuring consistent performance under demanding conditions.

The taper cut ground electrode tip design optimizes the spark exposure to the air-fuel mixture, promoting efficient combustion. The ground electrode is constructed with a nickel core and configured in a standard single-electrode layout, balancing durability and ignition reliability. The spark plug includes a removable nut electrical terminal type, facilitating straightforward installation and removal.

With a pre-gap size of 0.032 inches and a flat seat type, the NGK Iridium IX Spark Plug 4218 ensures a precise fit and proper sealing in the combustion chamber. The 0.75 inch reach and 10 mm thread diameter are engineered to match the specifications required by the Ferrari F355 Berlinetta engine.

About the Iridium IX Spark Plug Line

The NGK Iridium IX Spark Plug line is designed to provide enhanced ignition performance and durability through the use of iridium-tipped electrodes. This product line focuses on delivering stable spark and improved wear resistance compared to conventional spark plugs. The 4218 model within this line is tailored for high-performance vehicles like the Ferrari F355 Berlinetta, where precise ignition timing and longevity are critical.

Applications and Problem Solving

• Compatible with Ferrari F355 Berlinetta ignition systems
• Helps reduce misfires and rough idling
• Improves cold start performance and throttle response
• Addresses spark plug fouling and electrode wear
• Supports consistent combustion for fuel efficiency

Installation Notes and Tips

• Verify the spark plug gap is set to 0.032 inches before installation
• Use a 5/8 inch socket wrench for proper torque application
• Ensure the flat seat type matches the engine’s cylinder head design
• Apply anti-seize compound sparingly on threads if recommended by the vehicle manufacturer
• Check for proper reach of 0.75 inches to avoid engine damage

Quality Assurance and Warranty

NGK spark plugs, including the Iridium IX Spark Plug 4218, are manufactured to meet strict quality standards for durability and performance. While specific warranty details may vary, NGK products typically come with a limited warranty against manufacturing defects. Using the correct part number Cr8eix ensures compatibility and maintains the integrity of the Ferrari F355 Berlinetta ignition system.