NGK 3508 Spark Plug

Reliable Ignition Performance for Mazda Miata

The NGK Laser Iridium Spark Plug 3508 is engineered to deliver consistent ignition and efficient combustion for Mazda Miata vehicles. Designed with advanced materials and precise specifications, this spark plug supports optimal engine performance and durability.

• Iridium center electrode tip for enhanced durability and stable ignition
• Copper core center electrode for improved conductivity
• Standard ground electrode with nickel core material
• Non-removable nut electrical terminal type for secure connection
• Pre-gap size of 0.032 inches for precise spark delivery
• Flat seat type and 14mm thread diameter for proper fitment
• Heat range 5 suitable for Mazda Miata engine requirements
• Hex size 5/8 inch for easy installation

About the NGK Laser Iridium Spark Plug Line

The Laser Iridium Spark Plug line from NGK combines iridium's high melting point with precise electrode design to provide long service life and consistent ignition. This product line is tailored to meet the demands of modern engines, including the Mazda Miata, by offering improved wear resistance and stable spark performance under various driving conditions.

Technical Details and Specifications

The NGK 3508 spark plug features a single ground electrode with a standard tip design made from nickel, ensuring reliable grounding and spark gap stability. The center electrode core is copper, which enhances electrical conductivity, while the iridium tip provides a fine point for efficient ignition. The plug has a pre-gap size of 0.032 inches and a reach of 0.75 inches, matching the Mazda Miata's engine specifications. Its flat seat type and 14mm thread diameter ensure proper sealing and fitment. The non-removable nut terminal type offers a secure electrical connection, and the hex size of 5/8 inch facilitates installation with standard tools.

Compatible Applications and Common Issues Addressed

• Compatible with Mazda Miata models requiring part number IFR5T-8N spark plugs
• Helps resolve misfires caused by worn or damaged spark plugs
• Improves cold start performance and throttle response
• Reduces fouling and carbon buildup for cleaner combustion
• Supports consistent engine idling and smooth acceleration

Installation Notes and Tips

When installing the NGK Laser Iridium Spark Plug 3508, ensure the engine is cool to prevent damage to the threads. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended specifications to avoid over-tightening or under-tightening. Verify the pre-gap size of 0.032 inches before installation, although the plug comes pre-gapped. Proper installation will help maintain optimal ignition performance and extend the service life of the spark plug.

Quality Assurance and Warranty

NGK spark plugs are manufactured to strict quality standards to ensure reliable performance and durability. The Laser Iridium Spark Plug 3508 undergoes rigorous testing for material integrity and electrical performance. While specific warranty details are not provided here, NGK products typically come with manufacturer-backed quality assurance to support customer confidence in their purchase.