NGK 6855 Spark Plug

NGK V-Power Spark Plug 6855 Overview

The NGK V-Power Spark Plug part number 6855 is engineered to deliver reliable ignition performance for a variety of vehicle applications. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and consistent engine operation.

• Resistance: 5000 ohms for optimal electrical performance
• Ground Electrode Tip Design: Standard for reliable spark delivery
• Center Electrode Core Material: Copper for enhanced conductivity
• Ground Electrode Core Material: Nickel for durability
• Pre-Gap Size: 0.044 inches to ensure proper spark gap
• Hex Size: 5/8 inch for standard installation tools
• Thread Diameter: 14.00 mm with 0.75 inch reach
• Manufacturer Heat Range: 7 suitable for moderate heat dissipation
• Seat Type: Flat for secure sealing
• Electrical Terminal Type: Non-removable nut for stable connection

About the NGK V-Power Spark Plug Line

The V-Power Spark Plug line from NGK is designed to provide dependable ignition components that meet OEM specifications. This product line focuses on delivering consistent spark performance and durability through quality materials such as copper center electrodes and nickel ground electrodes. The 6855 spark plug is part of this line, offering a balance of heat range and electrical resistance suitable for many vehicle engines.

Technical Details and Performance

The NGK 6855 spark plug features a copper core center electrode that enhances electrical conductivity, promoting efficient ignition. The nickel ground electrode and tip provide resistance to wear and corrosion, extending service life. With a resistance rating of 5000 ohms, this spark plug helps reduce radio frequency interference while maintaining reliable spark energy. The pre-gap size of 0.044 inches is factory set to optimize combustion efficiency. Its flat seat design ensures a proper seal in the cylinder head, preventing compression loss.

Applications and Problem Solving

• Compatible with vehicles requiring a 14 mm thread diameter and 0.75 inch reach spark plug
• Addresses issues such as misfires caused by worn or damaged spark plugs
• Helps improve cold starts and engine idling stability
• Reduces electrical interference in ignition systems
• Supports consistent engine performance under moderate heat conditions

Installation Notes and Tips

When installing the NGK V-Power Spark Plug 6855, ensure the spark plug gap is checked and adjusted if necessary to 0.044 inches. Use a 5/8 inch socket for proper torque application. The flat seat design requires careful tightening to avoid damage to the cylinder head. The non-removable nut terminal type provides a secure electrical connection; verify compatibility with your ignition wire connectors before installation.

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring consistent performance and durability. The V-Power Spark Plug 6855 undergoes rigorous testing for heat range, electrical resistance, and material integrity. While specific warranty details are not provided, NGK products typically come with manufacturer-backed quality assurance to support reliable operation in compatible vehicles.