NGK 4929 Spark Plug

Reliable Ignition with NGK Standard Spark Plug 4929

The NGK Standard Spark Plug 4929 is engineered to deliver 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
• Pre-Gap Size: .036 inches for precise spark gap
• Thread Diameter: 12.00 mm with a reach of .75 inches
• Hex Size: 18 mm for easy installation
• Seat Type: Flat for secure fitment
• Electrical Terminal Type: Stud for reliable connection
• Manufacturer Heat Range: 8, suitable for moderate engine temperatures
• Insulator Height: 50.00 mm for proper insulation

About the NGK Standard Spark Plug Line

The NGK Standard Spark Plug line is designed to meet the requirements of a wide range of gasoline engines, providing dependable ignition with standard electrode designs and materials. The 4929 part number belongs to this line, offering a balance of durability and performance with copper and nickel components that support stable combustion and engine efficiency.

Technical Details and Application

The NGK 4929 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 5000 ohm resistance helps reduce radio frequency interference, protecting vehicle electronics. The flat seat and 12 mm thread diameter with .75 inch reach make it compatible with many vehicle engines requiring these specifications. The pre-gap of .036 inches is factory set for optimal ignition timing and combustion efficiency.

Common Uses and Problem Solving

• Restores proper ignition in engines experiencing misfires
• Improves fuel efficiency by ensuring consistent spark delivery
• Reduces engine hesitation and rough idling
• Helps maintain stable engine performance under normal operating temperatures
• Prevents radio frequency interference affecting vehicle electronics

Installation Notes and Tips

Before installation, verify the spark plug gap matches your vehicle manufacturer’s specifications. Use a torque wrench to tighten the spark plug to the recommended torque to avoid damage to the threads or seat. The 18 mm hex size allows for standard spark plug socket compatibility. Ensure the electrical terminal stud connects securely to the ignition wire for reliable spark transmission.

Quality Assurance and Warranty

NGK spark plugs are manufactured to strict quality standards to ensure durability and performance. The Standard Spark Plug 4929 undergoes rigorous testing for heat range, resistance, and electrode integrity. While specific warranty details vary by distributor, NGK products typically come with a limited warranty against manufacturing defects.