NGK 2667 Spark Plug

NGK Iridium IX Spark Plug Overview

The NGK Iridium IX Spark Plug 2667 is engineered for reliable ignition performance in a range of vehicles including Audi, Volkswagen, Porsche, and Chevrolet models. Designed with advanced materials and precise specifications, this spark plug supports efficient combustion and consistent engine operation.

• Iridium center electrode tip for enhanced durability and ignition
• Taper cut ground electrode tip design for improved spark exposure
• Copper core center electrode for optimal conductivity
• Nickel ground electrode core material with standard ground configuration
• Non-removable nut electrical terminal type for secure connection
• Pre-gap size of 0.032 inches for precise spark gap
• Flat seat type with 14mm thread diameter and 0.75 inch reach
• Manufacturer heat range 7 suitable for various performance applications
• Hex size 5/8 inch for standard installation tools

Iridium IX Spark Plug Product Line Details

The Iridium IX Spark Plug line by NGK is designed to provide enhanced ignition performance and longer service life compared to conventional spark plugs. Featuring an iridium center electrode tip, these plugs offer improved wear resistance and stable spark delivery, which is critical for vehicles such as the Audi A4, Volkswagen Golf, and Porsche 911. The 2667 part number represents a specific configuration optimized for compatibility with multiple makes and models requiring a heat range 7 spark plug.

Technical Description and Compatibility

This NGK spark plug features a copper core center electrode that ensures excellent electrical conductivity, paired with an iridium tip that resists erosion and maintains a consistent spark. The taper cut ground electrode tip design increases spark exposure, promoting better combustion efficiency. The single ground electrode made of nickel provides durability under high temperatures. With a flat seat and a 14mm thread diameter, the plug fits securely in engines designed for this specification. The 0.032 inch pre-gap size is factory set to optimize ignition timing and performance.

Compatible with a variety of vehicles, the NGK 2667 spark plug is suitable for models such as the Audi A3 Quattro, Volkswagen Passat CC, Porsche Cayenne, Chevrolet Cruze, and Aston Martin DB7, among others. This makes it a versatile choice for secondary ignition system maintenance across multiple brands.

Common Applications and Problem Solving

• Restores consistent ignition in engines experiencing misfires
• Improves fuel efficiency by ensuring proper spark delivery
• Reduces rough idling caused by worn or fouled spark plugs
• Supports stable engine performance under varied driving conditions
• Helps maintain emissions compliance by promoting complete combustion

Installation Notes and Tips

• Verify compatibility with your vehicle’s make and model before installation
• Use a 5/8 inch socket wrench for proper tightening
• Check and adjust spark plug gap if necessary, though pre-gap is factory set at 0.032 inches
• Apply anti-seize compound sparingly on threads if recommended by the vehicle manufacturer
• Torque to manufacturer specifications to avoid damage to the spark plug or cylinder head

Quality Assurance and Warranty

NGK spark plugs, including the Iridium IX 2667, are manufactured to meet strict quality standards ensuring reliable performance and durability. While specific warranty details may vary, NGK typically offers coverage against manufacturing defects. Using genuine NGK parts helps maintain engine integrity and supports long-term vehicle reliability.