NGK 5509 Spark Plug

Reliable Ignition for Porsche 911 Vehicles

The NGK Standard Spark Plug 5509 is engineered to provide consistent ignition performance for Porsche 911 models. 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 three ground electrodes
• Core Materials: Copper center electrode with nickel tips and nickel ground electrode core
• Electrical Terminal: Removable nut type for easy installation
• Pre-Gap Size: 0.036 inches for precise spark gap
• Hex Size: 5/8 inch for standard wrench compatibility
• Insulator Height: 50.00 mm ensuring proper fit and insulation
• Manufacturer Heat Range: 7, suitable for Porsche 911 engine requirements
• Seat Type: Flat for secure sealing
• Thread Diameter: 14.00 mm with 0.75 inch reach

About the NGK Standard Spark Plug Line

The Standard Spark Plug line by NGK offers reliable ignition components designed to meet OEM specifications. This product line focuses on delivering consistent performance and durability using quality materials such as copper and nickel. The 5509 spark plug is part of this line, providing a balance of efficiency and longevity for secondary ignition systems in vehicles like the Porsche 911.

Technical Details and Performance

The NGK 5509 spark plug features a copper core center electrode that enhances thermal conductivity and durability. The nickel tip on both the center and ground electrodes ensures resistance to wear and corrosion. With three ground electrodes, the spark plug maintains stable ignition and improved spark exposure. The 5000 ohm resistance helps reduce radio frequency interference, supporting smooth engine operation. Its flat seat and 14 mm thread diameter with a 0.75 inch reach ensure proper fitment and sealing in Porsche 911 engines.

Common Applications and Problem Solving

• Restores consistent ignition in Porsche 911 secondary ignition systems
• Addresses misfires caused by worn or damaged spark plugs
• Improves fuel efficiency by ensuring proper combustion
• Reduces engine hesitation and rough idling
• Prevents electrical interference with vehicle electronics

Installation Notes and Tips

When installing the NGK Standard Spark Plug 5509, ensure the spark plug gap is set to 0.036 inches if adjustment is needed. Use a 5/8 inch socket wrench for proper torque application. The removable nut electrical terminal allows for flexible connection options. Always verify compatibility with your Porsche 911 model year and engine specifications before installation.

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Standard Spark Plug 5509 undergoes rigorous testing to comply with OEM requirements. While specific warranty details may vary, NGK products typically come with manufacturer-backed quality assurance to support long-term use in Porsche 911 vehicles.