NGK 6615 Spark Plug

Reliable Ignition with NGK Standard Spark Plug 6615

The NGK Standard Spark Plug 6615 delivers consistent ignition performance for a variety of vehicles. Designed with durable materials and precise specifications, this spark plug supports efficient engine operation and reliable starts.

• Resistance: 5000 ohms for optimal electrical performance
• Ground Electrode Tip and Configuration: Standard design with a single ground electrode
• Core Materials: Copper center electrode with nickel tip and nickel ground electrode core
• Electrical Terminal: Non-removable nut type for secure connection
• Pre-Gap Size: Factory set at .032 inches for proper spark gap
• Hex Size: 13/16 inch for standard installation tools
• Insulator Height: 55.00 mm ensuring proper insulation and heat dissipation
• Manufacturer Heat Range: 7, suitable for moderate engine temperatures
• Seat Type: Flat for consistent sealing
• Thread Diameter and Reach: 14.00 mm diameter with .75 inch reach for correct fitment

About the NGK Standard Spark Plug Line

The NGK Standard Spark Plug line is engineered to meet OEM specifications, providing dependable ignition components for everyday driving conditions. The 6615 part number belongs to this line, offering a balance of durability and performance with materials like copper and nickel that support stable combustion and longevity.

Technical Details and Application

The NGK 6615 spark plug features a copper core center electrode with a nickel tip, enhancing conductivity and wear resistance. The single ground electrode with a nickel core ensures consistent spark delivery. Its resistance rating of 5000 ohms helps reduce radio frequency interference, making it suitable for vehicles requiring standard ignition components. The flat seat and precise thread dimensions ensure proper sealing and fitment in compatible engines.

Common Uses and Problem Solving

• Restores engine misfire issues caused by worn or fouled spark plugs
• Improves cold start reliability in vehicles requiring a heat range 7 spark plug
• Reduces ignition system electrical noise with 5000 ohm resistance
• Maintains consistent combustion for smoother engine performance
• Replaces OEM spark plugs in compatible vehicles needing a .75 inch reach and 14 mm thread diameter

Installation Notes and Tips

Ensure the spark plug gap is set to the factory pre-gap of .032 inches before installation. Use a 13/16 inch socket for proper tightening torque. Verify compatibility with your vehicle’s make and model, especially regarding thread diameter and reach. Avoid over-tightening to prevent damage to the spark plug or cylinder head.

Quality Assurance

NGK spark plugs are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Standard Spark Plug line, including part number 6615, undergoes rigorous testing to comply with OEM specifications. While no specific warranty information is provided, NGK products are widely recognized for consistent quality in ignition components.