In order for the air-fuel mixture of the engine to ignite perfectly, a stable ignition spark is needed at the right time. Therefore, the correct spark plug choice is essential for optimal combustion and power development of the engine. Particular attention should be paid to the heat value as specified by the manufacturer. Since each manufacturer indicates the heat value differently, for example, a Bosch heat value of 3 might correspond to an NGK value of 9. As a guideline, each vehicle manual lists the manufacturer specifications along with alternative replaceable spark plugs and their exact designations or type codes.

Caution is advised when using suppressed spark plug caps; double is not necessarily 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, offers excellent corrosion protection

Technical characteristics:

• Type designation: BPR4FS
• Electrode gap: 0.85 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 spark plugs, glow plugs, ignition coils, lambda sensors, spark plug caps, and ignition cables. The company philosophy "Performance through precision, precision for performance" reflects the high standards for its products. With high-quality products and as a globally operating original equipment manufacturer for renowned automotive manufacturers, NGK has been the world market leader in its field for many years.