NGK 3478 Spark Plug

Reliable Ignition with NGK Standard Spark Plug 3478

The NGK Standard Spark Plug 3478 offers dependable ignition performance for a variety of vehicles requiring a quality secondary ignition component. Designed with durable materials and precise specifications, this spark plug supports consistent engine operation and efficient combustion.

• Resistance: 5000 ohms for optimal electrical performance
• Ground Electrode Tip Design: Standard for reliable spark delivery
• Ground Electrode Core Material: Nickel for durability
• Center Electrode Core Material: Copper to enhance conductivity
• Pre-Gap Size: 0.028 inches for precise spark gap
• Ground Electrode Quantity: Dual electrodes for improved ignition
• Hex Size: 5/8 inch for standard installation tools
• Seat Type: Flat for secure fitment
• Thread Diameter: 10.00 mm with 0.75 inch reach
• Electrical Terminal Type: Stud for compatibility with various ignition systems
• Manufacturer Heat Range: 8 suitable for moderate heat conditions

About the NGK Standard Spark Plug Line

The NGK Standard Spark Plug line is engineered to meet original equipment specifications, providing reliable ignition performance for everyday driving conditions. This product line focuses on delivering consistent spark and durability using quality materials such as copper and nickel, making it a practical choice for many vehicle makes and models requiring dependable secondary ignition components.

Technical Details and Performance

The NGK Standard Spark Plug 3478 features a copper core center electrode with a nickel tip, which balances conductivity and wear resistance. The dual ground electrodes, also made of nickel, help maintain stable spark generation and reduce electrode wear. With a resistance of 5000 ohms, this spark plug is designed to suppress electrical noise while ensuring efficient ignition. The flat seat and 10 mm thread diameter with a 0.75 inch reach provide secure installation in compatible engines. The pre-gap size of 0.028 inches is set to optimize spark timing and combustion efficiency.

Common Applications and Problem Solving

• Restores engine misfire issues caused by worn or fouled spark plugs
• Improves cold start performance in vehicles with compatible ignition systems
• Reduces rough idling and hesitation during acceleration
• Helps maintain fuel efficiency by ensuring proper combustion
• Addresses ignition noise interference with 5000 ohm resistance

Installation Notes and Tips

When installing the NGK Standard Spark Plug 3478, ensure the spark plug gap is checked and adjusted if necessary to 0.028 inches. Use a 5/8 inch socket wrench for proper torque application to avoid damage to the flat seat. Confirm compatibility with your vehicle’s ignition system, especially regarding the stud-type electrical terminal. It is recommended to replace spark plugs in sets to maintain balanced engine performance.

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring consistent performance and durability. The Standard Spark Plug 3478 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.