NGK 3547 Spark Plug

Reliable Ignition Performance for Select GM and Ford Vehicles

The NGK G-Power Spark Plug 3547 is engineered to deliver consistent ignition and efficient combustion for a range of vehicles including Buick, Chevrolet, Ford, and GMC models. Designed with durable materials and precise specifications, this spark plug supports optimal engine performance and longevity.

• Resistance rating of 5000 ohms for stable electrical flow
• Trapezoid ground electrode tip design for improved spark exposure
• Nickel ground electrode core material ensuring durability
• Copper center electrode core with platinum tip for enhanced conductivity and wear resistance
• Non-removable nut electrical terminal type for secure connection
• Pre-gap size of 0.040 inches optimized for ignition efficiency
• Tapered seat type and 14mm thread diameter for proper fitment
• Hex size of 5/8 inch for standard installation tools
• Manufacturer heat range of 5 suitable for moderate operating temperatures

About the NGK G-Power Spark Plug Line

The G-Power Spark Plug line from NGK focuses on combining advanced electrode materials with proven design features to enhance ignition reliability and engine responsiveness. The use of a platinum tip on the center electrode improves wear resistance and maintains consistent spark quality over time, making it suitable for a variety of secondary ignition applications in light trucks and passenger vehicles.

Technical Details and Compatibility

This spark plug features a single ground electrode with a trapezoid tip design, which helps maintain a stable spark and efficient combustion. The copper core center electrode paired with a platinum tip balances excellent electrical conductivity with durability. The tapered seat and 14mm thread diameter ensure compatibility with many GM and Ford engines, including models such as the Chevrolet Silverado, Ford F-150, Buick Century, and GMC Sierra. The NGK part number 3547 corresponds to the Ur5gp stock number, confirming exact fitment for these vehicles.

Common Applications and Problem Solving

• Restores proper ignition in vehicles experiencing misfires or rough idling
• Improves fuel efficiency by ensuring complete combustion
• Reduces engine hesitation during acceleration
• Addresses spark plug wear and electrode erosion in older engines
• Supports stable engine performance in moderate heat range conditions

Installation Notes and Tips

Before installation, verify the spark plug gap is set to 0.040 inches as specified. Use a 5/8 inch socket wrench for removal and installation. Ensure the tapered seat is clean and free of debris to achieve a proper seal. Avoid overtightening to prevent thread damage. The non-removable nut terminal type requires compatible ignition wire connectors for secure attachment.

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring reliable performance and durability. The G-Power Spark Plug 3547 undergoes rigorous testing for heat range, resistance, and electrode integrity. While specific warranty details vary by distributor, NGK products typically include coverage against manufacturing defects to provide confidence in your purchase.