NGK 4002 Spark Plug

Reliable Ignition with NGK Standard Spark Plug 4002

The NGK Standard Spark Plug 4002 offers dependable ignition performance for a variety of vehicles. Designed with quality materials and precise specifications, this spark plug supports efficient combustion and engine operation.

• Resistance: 10,000 ohms for stable electrical flow
• Ground Electrode Tip and Configuration: Standard design for consistent spark delivery
• Ground Electrode Core Material: Durable nickel construction
• Center Electrode Core Material: Copper for excellent conductivity
• Center Electrode Tip Material: Nickel for wear resistance
• Pre-Gap Size: 0.028 inches optimized for ignition timing
• Single Ground Electrode for reliable spark generation
• Hex Size: 3/4 inch for standard installation tools
• Insulator Height: 40.00 mm ensuring proper insulation
• Manufacturer Heat Range: 6 suitable for moderate engine temperatures
• Flat Seat Type and 0.375 inch Reach for secure fitment
• Thread Diameter: 14.00 mm compatible with many engine heads
• Electrical Terminal Type: Non-removable nut for secure connection

About the NGK Standard Spark Plug Line

The NGK Standard Spark Plug line is engineered to meet OEM specifications, providing reliable ignition performance for everyday driving conditions. The 4002 part number belongs to this line, offering a balance of durability and efficiency through its nickel and copper electrode materials. This line is suitable for a wide range of vehicles requiring a heat range of 6 and standard spark plug dimensions.

Technical Details and Application

The NGK 4002 spark plug features a copper core center electrode that enhances electrical conductivity, paired with a nickel tip and ground electrode for durability. Its resistance rating of 10,000 ohms helps reduce radio frequency interference, ensuring stable engine operation. The flat seat and 14 mm thread diameter make it compatible with many domestic and import vehicles, including common makes and models such as Honda Accord, Toyota Camry, and Ford Focus that require a heat range 6 spark plug with similar specifications.

Common Uses and Problem Solving

• Restores proper ignition timing and combustion efficiency
• Reduces misfires caused by worn or damaged spark plugs
• Improves engine start-up reliability in moderate temperature conditions
• Helps maintain fuel economy by ensuring consistent spark delivery
• Prevents electrical interference with vehicle electronics due to built-in resistance

Installation Notes and Tips

When installing the NGK Standard Spark Plug 4002, ensure the spark plug gap is set to 0.028 inches if adjustment is necessary. Use a 3/4 inch socket for proper torque application and avoid over-tightening to prevent thread damage. The flat seat design requires a clean and flat cylinder head surface for optimal sealing. Always check vehicle-specific service manuals for torque specifications and installation procedures.

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring consistent performance and durability. The Standard Spark Plug 4002 undergoes rigorous testing for heat range accuracy and material integrity. While specific warranty details are not provided, NGK products typically come with manufacturer-backed quality assurance to support reliable ignition system operation.