NGK have over 80 years of experience in spark plug manufacturing and are the world leader in spark plug technology. NGK has an extensive range of spark plugs each with their own unique characteristics specifically engineered to its application and designed to suit a broad range of motorcycles ATVs & UTVs in Australasia. With NGK's dedication to quality outstanding reliability and state of the art manufacturing techniques you can rely on your NGK Spark Plugs.Don’t just ask for a spark plug insist on NGK.The 98% pure copper core delivers increased heat dissipation for more reliable starts and reduced risk of overheating. While cold-rolled threads prevent cross-threading and damage to cylinder heads and a trivalent plating eliminates the need for anti-seize. Complete with a high-grade alumina silicate ceramic.ShellThread Size: 12mmThread Pitch: 1.25mmSeat Type: GasketReach: 19mm (3/4 )Hex Size: 16mm (5/8 )Terminal Type: SolidGap: 0.8mm (0.031 )Centre ElectrodeMaterial: NickelType: StandardSize: 2.5mmProjection: ProjectedGround ElectrodeMaterial: NickelType: StandardQuantity: 1SpecificationsResistor: YesResistor Value: 5k OhmHeat Range: 9 Fits: Sea-Doo 4-TEC GTX 300 2018 4-TEC RXP 300 2018 4-TEC RXT 300 2018 GTX 300 2019-2020 RXP 300 2016-2017 2019-2020 RXT 300 2016-2017 2019-2020