NGK 4908 Spark Plug

Reliable Ignition with NGK Standard Spark Plug 4908

The NGK Standard Spark Plug 4908 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: 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 Type: Stud for secure connection
• Pre-Gap Size: 0.036 inches for precise spark gap
• Hex Size: 14 mm for standard installation tools
• Insulator Height: 50.00 mm ensuring proper insulation
• Manufacturer Heat Range: 7 suitable for moderate engine temperatures
• Seat Type: Flat for consistent sealing
• Thread Diameter: 10.00 mm with 26.5 mm reach for proper fitment

About the NGK Standard Spark Plug Line

The NGK Standard Spark Plug line is designed to meet OEM specifications for secondary ignition components. This product line focuses on delivering reliable ignition performance using proven materials such as copper and nickel, ensuring durability and consistent spark delivery. The Standard Spark Plug 4908 is part of this line, offering a balance of performance and longevity for everyday driving conditions.

Technical Details and Performance

The NGK 4908 spark plug features a copper core center electrode that enhances thermal conductivity, helping to dissipate heat efficiently. The nickel tip on the center electrode and the nickel ground electrode core provide durability against wear and corrosion. With a resistance of 5000 ohms, this spark plug helps reduce radio frequency interference while maintaining stable ignition. The pre-gap size of 0.036 inches is factory set to ensure optimal spark and combustion efficiency. Its flat seat type and 14 mm hex size allow for straightforward installation and secure sealing in compatible engines.

Common Applications and Problem Solving

• Restores proper ignition in engines experiencing misfires or rough idling
• Helps improve fuel efficiency by ensuring complete combustion
• Reduces engine hesitation during acceleration
• Prevents fouling caused by inconsistent spark delivery
• Supports stable engine performance in moderate heat range conditions

Installation Notes and Tips

Before installation, verify compatibility with your vehicle’s make and model to ensure proper fitment. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended specifications to avoid damage to the threads or improper sealing. The 14 mm hex size is compatible with standard spark plug sockets. Check the pre-gap size before installation and adjust if necessary to match your engine’s requirements.

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Standard Spark Plug 4908 undergoes rigorous testing for electrical resistance, heat range, and material integrity. While specific warranty details may vary, NGK products typically come with manufacturer-backed quality assurance to support long-term use in compatible vehicles.