Iridium Spark Plug NGK 97566 SILZKFR8F7S for Mercedes-Benz A/C/E/S-Class AMG M274 M270

Iridium Spark Plug NGK 97566 SILZKFR8F7S for Mercedes-Benz A/C/E/S-Class AMG M274 M270 

Technological Excellence of NGK Iridium Spark Plugs

The NGK 97566 SILZKFR8F7S spark plug is a high-tech component specifically engineered for modern turbocharged Mercedes-Benz engines. The use of precious iridium on the center electrode allows for a significant reduction in its diameter, ensuring a highly efficient concentration of the electrical discharge. This guarantees stable spark formation even under high combustion chamber pressure, typical for direct-injection and turbocharged engines.

Engine Benefits and Efficiency

The application of these spark plugs promotes more complete and rapid combustion of the air-fuel mixture. As a result, the engine demonstrates improved throttle response, stable idling, and optimal power output. Thanks to iridium's high melting point, the electrodes are virtually immune to erosion and corrosion, providing an extended service life compared to standard spark plugs. The ultra-fine center electrode reduces the voltage required for the spark gap, decreasing the load on the ignition coils.

Design Features and Reliability

The spark plug features an extended threaded portion and a specialized insulator configuration to prevent flashover. The spark plug body undergoes a galvanic nickel plating process, protecting the metal from seizing and simplifying removal during routine maintenance. A built-in resistor suppresses electromagnetic interference, ensuring the correct operation of the vehicle's onboard electronics and sensors. The copper core of the center electrode facilitates rapid heat dissipation, preventing the risk of pre-ignition under high loads.

Detailed Compatibility with Mercedes-Benz Engines and Models

NGK 97566 spark plugs are direct replacements for original equipment and are designed for M270 and M274 series gasoline engines.

Technical Specifications

• Brand: NGK

• Brand Registration Country: Japan

• Material: Iridium, platinum, nickel-plated steel, ceramic, copper

• Size: Thread M12x1.25, thread length 26.5 mm, hex size 14 mm (Bi-Hex)

• Color: Metallic, white

• Weight: 48 grams

• Gender: Unisex

• Condition: New

• Product Group: Ignition System

• Purpose: Igniting the fuel mixture in internal combustion engines

• Compatibility: Mercedes-Benz M270, M274 engines (A0041598103, A0001590500)

• Features: High Ignitability technology, integrated resistor (5 kOhm)

• Center Electrode Type: Iridium tip

• Ground Electrode Type: Platinum chip

• Spark Gap: 0.7 mm

• Heat Range: 8

• Thread Pitch: 1.25 mm

• Seat Type: Flat gasket

• Package Included: Spark plug 1 pc, individual cardboard box, protective plastic sleeve

• Barcode (UPC): 087295875667