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NGK R0409B-8 (7791) - Racing Spark Plug / Sparkplug

NGK R0409B-8 (7791) - Racing Spark Plug / Sparkplug


NGK Spark Plug R0409B-8 (NGK 7 - Single



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NGK R0409B-8 (7791) - Racing Spark Plug / Sparkplug

NGK Spark Plugs can be found in every racing venue throughout the world. Whether you're a weekend warrior or an accomplished racer NGK Racing Spark Plugs are sparking winners.

NGK is the brand leader in the UK spark plug market and are the world's biggest supplier to many major car manufacturers. Each and every one of their products are designed to meet the most rigorous standards and are the professionals' choice because of their quality and technical excellence. Their plugs can be found in use by teams in F1, WRC and MotoGP. Put simply, NGK genuine spark plugs are the workhorse at the heart of smooth-running engines around the world.

For many years NGK Racing Spark Plugs have been firing racing engines throughout the world. Fine-wire center and ground electrodes provide better sparking and enhanced ignitability. Made to withstand the severe conditions that occur in racing engines they have a zinc dipped shell prevents corrosion while the triple gasket seal eliminates combustion gas leakage. Special configurations are used for the insulator noses to improve throttle response and prevent fouling with corrugated ribs on insulator to prevent flashover. The plug includes a solid copper core for a greater spark.

To find the correct spark plugs for your vehicle please use our online lookup or contact us for more help.

General Details:

Spanner Size16 mm
Thread SizeM10 x 1,0
Thread Length [mm]19,0
Spark PlugInterference Suppression 5 kOhm
Spark Plugwith gasket seat
Spark PlugConnector Type M4
Spark PlugIridium Middle Electrode
Spark Plug1 - Earthed Electrode
Spark Position [mm]0,5
Thread Length 1 [mm]12,7
Thread Length 2 [mm]6,3

Additonal Images:

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  • Precious metals used for greater durability and lower voltage requirements
  • Fine wire electrodes provide better sparking for enhance ignitability
  • Special configurations are used to improve throttle response

Cross Reference:

  • 31911-KRN-731
  • 31911-KRN-7310-M1

Spark Plug Health Check

Use Spark Plugs To Check Your Engine Health
Read More

Heat Ranges Explained

Learn what a spark plugs heat range means, and how it can effect your engine
Read More

Heat Cross Reference

Use our spark plug heat range cross reference table
Cross Reference Heat Range

Technical PDF Downloads:

Download the Technical PDF

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