For the fuel-air mixture in the engine to ignite perfectly, a stable spark is needed at the right moment. Therefore, the correct spark plug selection 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 specification. Since each manufacturer indicates the heat value differently, a Bosch heat value of 3 can correspond to an NGK value of 9, for example. For reference, each vehicle manual lists the manufacturer's specifications with alternatively applicable spark plugs and their exact designations or type codes.

We work with official vehicle application lists from manufacturers and provide you with exactly the right spark plug for your vehicle.

Caution is advised when using suppressed spark plug connectors, as 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, provides excellent corrosion protection

NGK high-performance racing spark plugs are specially designed for motorsport and are ideal for sports engines with constantly high RPMs. Unlike standard plugs, they are particularly resistant to vibrations, thermal stress, and high speeds. Perfect for trouble-free and performance-enhancing operation under demanding racing conditions. Therefore, this type of spark plug is not recommended for normal road traffic.

Technical features:

• Type designation: R2525-9
• Electrode gap: 0.90 mm
• 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 set for its products. Through high-quality products and as a globally acting OEM for well-known vehicle manufacturers, NGK has been the world market leader in its field for many years.