NGK 3403 Spark Plug

Overview of NGK G-Power Spark Plug 3403

The NGK G-Power Spark Plug 3403 is engineered for reliable ignition performance in a wide range of vehicles including Ford, Chevrolet, Cadillac, and Mazda models. Designed with advanced materials and precise specifications, this spark plug supports efficient combustion and consistent engine operation.

• Part Number: 3403 (Tr55gp)
• Center Electrode Tip Material: Platinum for enhanced durability
• Center Electrode Core Material: Copper for optimal conductivity
• Ground Electrode Core Material: Nickel with trapezoid tip design
• Resistance: 5000 ohms for noise suppression
• Pre-Gap Size: 0.060 inches
• Thread Diameter: 14.00 mm with 0.708 inch reach
• Hex Size: 5/8 inch for standard installation tools
• Seat Type: Tapered for secure fitment
• Manufacturer Heat Range: 5

About the G-Power Spark Plug Line

The NGK G-Power Spark Plug line focuses on delivering consistent ignition performance through the use of platinum-tipped electrodes and copper cores. This combination enhances wear resistance and electrical conductivity, making the G-Power series suitable for secondary ignition systems in various passenger and light truck applications. The 3403 model exemplifies these qualities with its trapezoid ground electrode tip and standard ground configuration.

Technical Details and Compatibility

The NGK 3403 spark plug features a single ground electrode with a trapezoid tip design made from nickel, which contributes to stable spark generation and longevity. The copper core center electrode ensures efficient heat dissipation, while the platinum tip improves electrode life and ignition reliability. With a resistance rating of 5000 ohms, this spark plug helps reduce electromagnetic interference in vehicle electronics.

This spark plug is compatible with a broad range of vehicles, including Ford F-150, Chevrolet Silverado 1500, Cadillac Escalade, Mazda MPV, and many others from brands such as Buick, GMC, Lincoln, and Pontiac. Its specifications make it suitable for models requiring a 14 mm thread diameter, 0.708 inch reach, and a tapered seat.

Applications and Problem Solving

• Restores consistent engine starting and smooth idling
• Reduces misfires caused by worn or damaged spark plugs
• Improves fuel efficiency by ensuring proper combustion
• Minimizes ignition system electrical noise with 5000 ohm resistance
• Extends spark plug service life with platinum-tipped electrode

Installation Notes and Tips

• Verify vehicle compatibility with part number 3403 before installation
• Use a 5/8 inch socket wrench for proper tightening
• Check and adjust the pre-gap to 0.060 inches if necessary
• Ensure the tapered seat is clean and free of debris for secure fit
• Do not overtighten to avoid thread damage

Quality Assurance and Warranty

NGK spark plugs, including the G-Power Spark Plug 3403, are manufactured to meet strict quality standards for durability and performance. The use of premium materials such as platinum and copper ensures consistent ignition and long service intervals. While specific warranty details may vary, NGK typically offers coverage against manufacturing defects, supporting reliability in secondary ignition applications.