NGK 6931 Spark Plug

Reliable Ignition with NGK Standard Spark Plug 6931

The NGK Standard Spark Plug 6931 is engineered to provide consistent ignition performance for Honda Accord and Prelude models. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and engine reliability.

• Resistance rating of 5000 ohms for stable electrical performance
• Standard ground electrode tip and configuration for dependable spark delivery
• Nickel ground electrode core and tip for corrosion resistance
• Copper center electrode core material for optimal conductivity
• Pre-gap size of 0.044 inches to ensure proper spark gap
• Flat seat type and 14mm thread diameter for secure fitment
• Hex size of 13/16 inch for easy installation
• Manufacturer heat range of 6 suitable for moderate operating temperatures
• Non-removable nut electrical terminal type for secure connection

About the NGK Standard Spark Plug Line

The NGK Standard Spark Plug line is designed to meet OEM specifications for a wide range of vehicles, including Honda models like the Accord and Prelude. This product line focuses on delivering reliable ignition performance with quality materials such as copper and nickel electrodes, ensuring consistent engine starts and smooth operation under normal driving conditions.

Technical Details and Compatibility

The NGK 6931 spark plug features a single ground electrode made of nickel, paired with a copper core center electrode tipped with nickel for balanced durability and conductivity. Its 0.75-inch reach and flat seat design ensure proper sealing and fitment in compatible Honda engines. The 5000 ohm resistance helps reduce electrical noise interference, supporting stable ignition system operation. This spark plug is specifically compatible with Honda Accord and Prelude models, making it a suitable replacement part for these vehicles.

Common Applications and Problem Solving

• Restores proper ignition timing and spark delivery
• Helps resolve engine misfires and rough idling
• Improves cold start performance in Honda Accord and Prelude
• Reduces fouling and electrode wear in standard driving conditions
• Maintains fuel efficiency by ensuring complete combustion

Installation Notes and Tips

When installing the NGK Standard Spark Plug 6931, ensure the spark plug gap is set to the specified 0.044 inches if adjustment is necessary. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended torque to avoid damage to the threads or improper sealing. The 13/16 inch hex size allows for standard spark plug socket compatibility. Always inspect the spark plug threads and cylinder head for cleanliness before installation.

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Standard Spark Plug 6931 undergoes rigorous testing for electrical resistance, heat range, and material integrity. While specific warranty details may vary, NGK products typically come with a limited warranty against manufacturing defects when installed and used according to vehicle manufacturer guidelines.