NGK 97566 Spark Plug

Reliable Ignition Performance for Mercedes-Benz Vehicles

The NGK Laser Iridium High Ignitability Spark Plug 97566 is engineered to deliver consistent ignition and efficient combustion for a range of Mercedes-Benz models. Designed with advanced materials and precise specifications, this spark plug supports optimal engine performance and fuel efficiency.

• Iridium center electrode tip for enhanced durability and ignition
• Thin square ground electrode tip design for improved spark exposure
• Copper core materials in both center and ground electrodes for superior conductivity
• Pre-gap size of 0.028 inches for precise spark gap
• Flat seat type with a thread diameter of 12.00 mm and reach of 1.06 inches
• Hex size of 0.551 inches for standard installation tools
• Manufacturer heat range rating of 8 suitable for high-performance engines
• Electrical terminal type: stud for secure connection

About the Laser Iridium High Ignitability Spark Plug Line

The NGK Laser Iridium High Ignitability Spark Plug line is designed to provide improved ignitability and longer service life compared to conventional spark plugs. Featuring a fine iridium tip and copper core electrodes, these plugs offer stable ignition and efficient combustion, which is critical for modern high-performance engines such as those found in Mercedes-Benz AMG and luxury models.

Technical Details and Specifications

This spark plug features a single ground electrode with a thin square tip, optimizing the spark path and reducing quenching effects. Both the center and ground electrodes use copper cores to enhance electrical conductivity, while the iridium tip on the center electrode ensures durability under high temperatures and pressures. The pre-gap size of 0.028 inches is factory set to meet precise ignition requirements. The flat seat design and 12 mm thread diameter ensure compatibility with specified Mercedes-Benz engines. The heat range of 8 is suitable for vehicles requiring a colder plug to prevent overheating during high-performance operation.

Compatible Mercedes-Benz Models

• Mercedes-Benz A35 AMG, A220, A250
• AMG GT series including AMG GT 55, 63, 63 S, Black Series, C, R, R Pro, and S
• C63 AMG, C63 AMG S, C300
• CLA35 AMG, CLA250
• E63 AMG S, E350
• G63 4x4 Squared AMG, G63 AMG, G550, G550 4x4
• GLA35 AMG, GLA250, GLB35 AMG, GLB250
• GLC63 AMG, GLC63 AMG S, GLC300
• GLE63 AMG S, GLE63 AMG S SUV, GLE350, GLE580
• GLS63 AMG, GLS580, Maybach GLS600, Maybach S560, Maybach S580
• S63 AMG, S63 AMG E Performance, S560, S580
• SL55 AMG, SL63 AMG, SL63 AMG S E Performance

Common Applications and Issues Addressed

• Restores consistent ignition in high-performance Mercedes-Benz engines
• Improves fuel efficiency by ensuring complete combustion
• Reduces misfires and rough idling caused by worn spark plugs
• Supports engine responsiveness and acceleration
• Helps maintain emissions compliance by optimizing spark timing

Installation Notes and Tips

Ensure the spark plug gap is checked before installation, although the pre-gap size of 0.028 inches is factory set. Use a torque wrench to tighten the spark plug to manufacturer specifications to avoid damage to the threads or seat. The 0.551 inch hex size allows for standard spark plug sockets. Confirm compatibility with your specific Mercedes-Benz model and engine variant before installation.

Quality Assurance and Warranty

NGK spark plugs are manufactured to strict quality standards to ensure reliable performance and durability. The Laser Iridium High Ignitability Spark Plug 97566 undergoes rigorous testing for heat resistance and electrical conductivity. While specific warranty details are not provided here, NGK products typically come with manufacturer-backed quality assurance to support long-term use in compatible Mercedes-Benz vehicles.