NGK 91568 Spark Plug

Reliable Ignition for Hyundai and Kia Vehicles

The NGK Laser Iridium High Ignitability Spark Plug 91568 is engineered to provide consistent ignition performance for select Hyundai and Kia models. Designed to meet the specific needs of vehicles like the Hyundai Veloster and Kia Forte5, this spark plug ensures efficient combustion and reliable engine operation.

• Iridium center electrode tip for enhanced durability and ignition
• Square platinum ground electrode tip designed for high ignitability
• Copper core center electrode for optimal conductivity
• Standard ground configuration with nickel ground electrode core
• Non-removable nut electrical terminal type for secure connection
• Pre-gap size of 0.032 inches for precise spark delivery
• Flat seat type with 26.5 mm reach and 12 mm thread diameter
• Hex size of 5/8 inch for installation compatibility
• Manufacturer heat range rating of 6

About the Laser Iridium High Ignitability Spark Plug Line

The NGK Laser Iridium High Ignitability Spark Plug line focuses on delivering improved ignition performance through advanced electrode materials and design. This product line incorporates iridium and platinum electrodes to enhance spark efficiency and durability, which contributes to better fuel combustion and engine responsiveness. The 91568 spark plug is part of this line, offering a balance of longevity and ignition reliability tailored for secondary ignition systems.

Technical Details and Performance

This spark plug features a copper core center electrode with an iridium tip, combining excellent electrical conductivity with high wear resistance. The ground electrode uses a square platinum tip, which supports high ignitability and stable spark generation. The nickel core ground electrode and standard ground configuration maintain consistent performance under various operating conditions. With a pre-gap size of 0.032 inches and a flat seat design, the spark plug ensures proper spark gap and secure seating in the combustion chamber. The non-removable nut terminal type provides a reliable electrical connection, reducing the risk of terminal loosening.

Compatible Vehicles and Applications

• Hyundai Veloster ignition system maintenance
• Kia Forte5 spark plug replacement
• Kia Forte Koup engine performance optimization
• Addressing misfires and rough idling in compatible Hyundai and Kia models
• Improving fuel efficiency and throttle response in specified vehicles

Installation Notes and Tips

• Ensure the spark plug gap is set to 0.032 inches before installation
• Use a 5/8 inch socket wrench for proper tightening
• Apply anti-seize compound sparingly on threads if recommended by the vehicle manufacturer
• Torque to manufacturer specifications to avoid damage to the spark plug or cylinder head
• Inspect ignition wires and coils during replacement for optimal performance

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Laser Iridium High Ignitability Spark Plug 91568 undergoes rigorous testing to comply with OEM specifications. While specific warranty details may vary, NGK products typically include coverage against manufacturing defects. Refer to NGK or vehicle manufacturer guidelines for warranty information.