Set of 8 iridium spark plugs NGK 97566 SILZKFR8F7S for Mercedes-Benz E/S-Class AMG GT G550 S560 V8

Set of 8 pcs NGK 97566 SILZKFR8F7S Iridium Spark Plugs for Mercedes-Benz E/S-Class AMG GT G550 S560 V8

Excellence of NGK Iridium Technologies for High-Performance Engines

NGK's Laser Iridium series spark plugs represent the pinnacle of engineering in ignition systems. The 97566 (SILZKFR8F7S) model is specifically designed for high-performance Mercedes-Benz engines that demand exceptional reliability and spark precision. The iridium-tipped center electrode features an extremely high melting point, making it resistant to electrical erosion and wear under the extreme loads of modern V8 Biturbo engines. The fine electrode diameter allows for a reduction in the required ignition voltage, providing a powerful and stable spark.

Design Advantages and Longevity

A key feature of these spark plugs is the use of a platinum chip on the ground electrode. The combination of iridium and platinum ensures that the spark gap remains constant throughout the entire service life, which is critical for preventing misfires. The ceramic insulator possesses high dielectric strength, preventing flashover even under high pressure within the combustion chamber. A special metal plating on the shell protects the spark plug from corrosion and seizing, facilitating easier removal during routine maintenance.

Impact on Vehicle Dynamic Performance

Installing a set of original NGK 97566 spark plugs directly impacts engine efficiency. Due to more complete and rapid combustion of the air-fuel mixture, throttle response is improved, idle speeds are stabilized, and harmful emission levels are reduced. For owners of Mercedes-Benz AMG and 550/560 models, this translates to maintaining factory power parameters and ensuring a confident engine start in all climatic conditions. The extended thread length and special sealing ring shape guarantee airtightness and proper heat dissipation.

Detailed Compatibility with Mercedes-Benz Vehicles

These spark plugs are intended for modern M176, M177, and M178 (V8 Biturbo) gasoline engines.

Technical Specifications

• Brand: NGK

• Brand Registration Country: Japan

• Material: Iridium, platinum, ceramic, steel

• Size: Thread M12 x 1.25, thread length 26.5 mm, hex size 14 mm (12-point)

• Color: Silver, white

• Weight: 380 grams

• Gender: Unisex

• Condition: new

• Product Group: Spark plugs

• Purpose: Ignition of the air-fuel mixture in internal combustion engines

• Compatibility: Mercedes-Benz with V8 engines M176, M177, M178 (C63, E63, S560, S63, G550, G63, AMG GT)

• Features: Laser-welded electrodes, iridium center electrode, platinum ground electrode inlay, interference suppression resistor

• Spark Plug Type: Laser Iridium

• Gap: 0.7 mm

• Heat Range: 8

• Quantity in Set: 8 pieces

• Terminal Type: Removable terminal or solid post (SAE)

• Tightening Torque: 15-20 Nm

• Equipment: 8 spark plugs in individual and master packaging