NGK 6427 Spark Plug - Intake Side

Reliable Ignition with NGK V-Power Spark Plug 6427

The NGK V-Power Spark Plug 6427 is engineered to deliver consistent ignition performance for a wide range of vehicles including Audi, Honda, Toyota, and Volkswagen models. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and engine reliability.

• Resistance: 5000 ohms for optimal electrical performance
• Ground Electrode Tip and Configuration: Standard design with nickel core
• Center Electrode: Copper core with nickel tip for durability
• Pre-Gap Size: .032 inches for precise spark gap
• Hex Size: 13/16 inch for easy installation
• Thread Diameter: 14.00 mm with .75 inch reach
• Flat Seat Type and Insulator Height of 55.00 mm
• Manufacturer Heat Range: 6, suitable for various engine conditions
• Electrical Terminal: Non-removable nut for secure connection

About the NGK V-Power Spark Plug Line

The V-Power Spark Plug line by NGK is designed to provide reliable ignition components that meet OEM specifications. This product line focuses on delivering consistent spark performance and durability through quality materials such as copper and nickel electrodes. The V-Power series is suitable for a broad range of secondary ignition applications, including many European, Japanese, and American vehicles.

Technical Details and Compatibility

The NGK V-Power Spark Plug 6427 (part number BPR6EY) features a copper core center electrode with a nickel tip, enhancing conductivity and wear resistance. The single ground electrode with a nickel core ensures stable spark delivery. With a resistance of 5000 ohms, it helps reduce electrical noise and interference. The flat seat and 14 mm thread diameter with a .75 inch reach make it compatible with various models such as the Audi 5000 Quattro, Honda Civic, Toyota Celica, Volkswagen Golf, and Volvo 740.

Common Applications and Problem Solving

• Restores proper ignition in vehicles experiencing misfires
• Improves engine start-up reliability in models like the Nissan Pathfinder and Mitsubishi Eclipse
• Reduces electrical interference affecting onboard electronics
• Maintains consistent combustion for smoother engine performance
• Replaces worn or fouled spark plugs in vehicles such as the Porsche 911 and Land Rover Discovery

Installation Notes and Tips

Ensure the spark plug gap is set to the specified .032 inches before installation. Use a 13/16 inch socket for proper torque application. The non-removable nut electrical terminal requires a compatible ignition wire boot. Verify thread engagement carefully to avoid cross-threading in the cylinder head. This spark plug is designed for flat seat applications and a reach of .75 inches, so confirm compatibility with your vehicle’s engine specifications.

Quality Assurance and Warranty

NGK V-Power Spark Plugs are manufactured to meet strict quality standards, ensuring reliable performance and durability. The use of copper and nickel materials in the electrodes supports long service life under normal operating conditions. While specific warranty details may vary, NGK products typically come with manufacturer-backed quality assurance to support customer confidence in fitment and function.