In order for the air-fuel mixture of the engine to ignite perfectly, a stable spark is required at the right moment. Therefore, the appropriate choice of spark plugs is essential for optimal combustion and performance development of the engine. Special attention should be paid to the heat value according to the manufacturer's specifications. Since each manufacturer states the heat value differently, for example, a Bosch heat value 3 can correspond to an NGK value of 9. For guidance, each vehicle manual lists the manufacturer's specifications along with alternative spark plugs that can be used and their exact designations or type codes.

Be cautious when using suppressed spark plug connectors, as having two is not necessarily better; in this case, no suppressed spark plug should be used as the total suppression resistance would be too high.

• High-quality alumina silicate ceramic, provides a stronger insulator for optimal performance
• 98% pure copper core, offers 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: BMR4A
• Electrode gap: 0.75 mm
• NGK heat value: 4
• Resistance: Suppressed
• 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 fields 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 for its own products. Through high-quality products and as a globally operating original equipment manufacturer for well-known vehicle manufacturers, NGK has been the world market leader in its field for many years.