NGK 4004 Spark Plug

Reliable Ignition with NGK Standard Spark Plug 4004

The NGK Standard Spark Plug 4004 is engineered to provide consistent ignition performance for a variety of vehicles. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and engine reliability.

• Resistance: 10,000 ohms for optimal electrical performance
• Ground Electrode Tip and Configuration: Standard design with a single nickel core electrode
• Center Electrode: Copper core with nickel tip for balanced conductivity and durability
• Pre-Gap Size: .028 inches for precise spark gap
• Thread Diameter: 14 mm with a reach of .375 inches and flat seat type
• Hex Size: 3/4 inch for standard installation tools
• Electrical Terminal: Non-removable nut for secure connection
• Manufacturer Heat Range: 4, suitable for moderate operating temperatures
• Insulator Height: 40 mm for proper insulation and heat dissipation

About the NGK Standard Spark Plug Line

The NGK Standard Spark Plug line is designed to meet original equipment specifications, providing reliable ignition performance for everyday driving conditions. The 4004 part number belongs to this line, offering a balance of durability and efficiency with standard electrode designs and materials such as nickel and copper. This line is ideal for drivers seeking dependable replacement spark plugs that maintain engine performance without specialized features.

Technical Details and Application

The NGK 4004 spark plug features a copper core center electrode with a nickel tip, which ensures effective conductivity and resistance to wear. The single ground electrode with a nickel core supports consistent spark delivery. With a pre-gap size of .028 inches and a heat range of 4, this spark plug is suitable for vehicles requiring moderate heat dissipation and standard ignition characteristics. The flat seat and 14 mm thread diameter make it compatible with many automotive engines that specify these dimensions.

Common Uses and Problem Solving

• Restores proper ignition timing and spark delivery in vehicles with worn spark plugs
• Helps reduce engine misfires caused by electrode wear or improper gap
• Improves fuel efficiency by maintaining consistent combustion
• Addresses rough idling and poor acceleration linked to ignition issues
• Supports stable engine performance in moderate temperature operating conditions

Installation Notes and Tips

When installing the NGK Standard Spark Plug 4004, ensure the spark plug gap is set to the specified .028 inches if adjustment is necessary. Use a 3/4 inch socket for proper torque application to avoid over-tightening or damage to the flat seat. The non-removable nut electrical terminal requires compatible ignition wire connectors. Always refer to the vehicle manufacturer’s specifications for torque values and installation procedures.

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Standard Spark Plug line, including part number 4004, undergoes rigorous testing for resistance, heat range, and material integrity. While specific warranty details are not provided here, NGK products typically come with manufacturer-backed quality assurance to support long-term use in compatible vehicles.