In order for the engine's air-fuel mixture to ignite perfectly, a stable spark at the right time is necessary. Therefore, choosing the right spark plug is essential for optimal combustion and performance development of the engine. Particular attention should be paid to the heat rating as specified by the manufacturer. Since each manufacturer specifies the heat rating differently, for example, a Bosch heat rating of 3 may correspond to an NGK rating of 9. For reference, each vehicle manual lists the manufacturer's specifications with alternative spark plugs and their exact designations or type codes.

Care should be taken when using suppressed spark plug connectors; double is not always better. In this case, a suppressed spark plug should not be used, as the overall suppression resistance would be too high.

• High-quality aluminum oxide silicate ceramic creates a stronger insulator for optimal performance
• 98% pure copper core provides excellent heat dissipation and conductivity
• Cold-rolled thread prevents cross-threading and damage to the cylinder head
• Outstanding material coating provides excellent corrosion protection

Technical Features:

• Type designation: B4ES
• Thread type: Long thread
• Thread length: 19.0 mm
• Thread diameter: 14.0 mm
• Wrench size: 20.8 mm
• Electrode gap: 0.75 mm
• NGK heat rating: 4
• Delivery contents: 1 piece

The correct torque for spark plugs:

NGK Spark Plug

With the two brands NGK (Ignition) and NTK (Sensors) and a comprehensive product range, NGK Spark Plug is the market leader in the areas of spark plugs, glow plugs, ignition coils, lambda sensors, spark plug connectors, and ignition cables. The company philosophy "Performance through Precision, Precision for Performance" reflects the high standards set for their products. Through high-quality products and as a globally active first supplier for renowned vehicle manufacturers, NGK has been the world market leader in their field for many years.