A spark plug seals the combustion chamber. It conducts a spark that is generated in the ignition coil into the combustion chamber and provides a gap for that spark to jump across. Finally, it conducts the heat it picks up in the combustion process to the cylinder head and into the cooling system. Since 1936, NGK has built itself to be the world's leading spark plug manufacturer. NGK's spark plugs have a triple-gasket sealing process which helps them to withstand the roughest ride. A solid copper core increases spark and heat transfer and the longer insulating nose prevents fouling. The double dipped zinc-chromate shells resists corrosion and rusting.
Over time jet ski spark plugs can deteriorate from producing the spark. When this happens, it changes the spark plug gap causing irregular spark and missing. You don't have to wait to change your plugs. When you do change them, however, wait for the engine to be cold. Do notchange them when the engine is hot or warm because it could cause you to cross thread it by putting a cold spark plug in an heated up expanded hole.
2002 GTX 4-TEC
2002 Sportster LE
2002 Sportster LT
2003 GTX 4 TEC
2003 GTX 4 TEC WAKE
2003 GTX 4 TECH Limited Supercharged
2003 GTX 4 TECH Supercharged
2003 Sportster 4 TEC
2003 Sportster LE
2004 Speedster 200 Twin 4-Tec, 1''st Edition
2004 Speedster 200 Twin 4-Tec, 2''nd Edition
2004 GTX 4-TEC
2004 GTX 4-TEC Limited
2004 GTX 4-TEC Limited Supercharged
2004 GTX 4-TEC Supercharged
2004 GTX 4-TEC Wakeboard Edition
2004 RXP Supercharged
2004 Sportster 4-Tec
2005 Challenger 180 4-TEC SCIC
2005 GTX 4-TEC Limited SCIC
2005 GTX 4-TEC Standard
2005 GTX 4-TEC Supercharged
2005 GTX 4-TEC Wakeboard Edition
2005 RXP
2005 RXT
2005 RXT
2005 Speedster 200 Twin 4-TEC
2005 Sportster 4-TEC
2006 Challenger 180 4-TEC
2006 Challenger CS
2006 GTI RENTAL
2006 GTI RENTAL
2006 GTI SE
2006 GTI STD
2006 GTX 4-TEC LTD
2006 GTX 4-TEC STANDARD
2006 GTX 4-TEC Supercharged
2006 GTX 4-TEC Wakeboard Edition
2006 Islandia 220
2006 RXP
2006 RXT
2006 Speedster 200 Twin 4-TEC NA
2006 Speedster 200 Twin 4-TEC NA Tower
2006 Speedster 200 Twin 4-TEC NA Wake
2006 Speedster 200 Twin 4-TEC SCIC
2006 Speedster 200 Twin 4-TEC SCIC Tower
2006 Speedster 200 Twin 4-TEC SCIC Wake
2006 Sportster 4-TEC
2006 Utopia 205
2007 Challenger 180 215 IC
2007 Challenger 180SE 215 IC
2007 Challenger 230 155NA
2007 Challenger 230 SE 155NA
2007 Challenger 230 SE 215 SCIC
2007 Challenger 230 WAKE 155NA
2007 Challenger 230 WAKE 215 SCIC
2007 GTI 4-TEC SE NA
2007 GTI 4-TEC SE NA
2007 GTI RENTAL
2007 GTI SE
2007 GTI STD
2007 GTX LTD BVIC
2007 GTX STD AND Wake
2007 GTX Wake BVIC
2007 Islandia 220 SE (155NA)
2007 RXP BVIC
2007 RXP NA
2007 RXT BVIC
2007 Speedster 150 155na
2007 Speedster 200 155NA
2007 Speedster 200 215IC
2007 Speedster 200 WAKE 155NA
2007 Speedster WAKE 215IC
2007 Utopia 205 155NA
2007 Utopia 205 SE 155NA
2008 150 Speedster 155
2008 150 Speedster 215
2008 180 Challenger 215
2008 180 Challenger SE 215
2008 200 Speedster 310
2008 200 Speedster 430
2008 205 Utopia 310
2008 205 Utopia SE 310
2008 205 Utopia SE 430
2008 230 Challenger 310
2008 230 Challenger SE 310
2008 230 Challenger SE 430
2008 230 Challenger Wake 310
2008 230 Challenger Wake 430
2008 GTI 130
2008 GTI RENTAL 130
2008 GTI RENTAL 130
2008 GTI SE 130
2008 GTI SE 155
2008 GTI SE 155
2008 GTX 155
2008 GTX 215
2008 GTX LTD 215
2008 Islandia SE 430
2008 RXP 155
2008 RXP 215
2008 RXP X 255
2008 RXT 215
2008 RXT X 255
2008 Speedster Wake 310
2008 Speedster Wake 430
2008 Wake 155
2008 Wake 215
2009 150 Speedster 155
2009 150 Speedster 215 SCIC
2009 150 Speedster 255 HO
2009 180 Challenger 215 SCIC
2009 180 Challenger SE 215 SCIC
2009 200 Speedster 215 SCIC
2009 205 Utopia SE 155 NA
2009 205 Utopia SE 215 SCIC
2009 230 Challenger 155 NA
2009 230 Challenger SE 215 SCIC
2009 230 Challenger SE 255 HO
2009 230 Challenger SP 155 NA
2009 230 Challenger SP 215 SCIC
2009 230 Wake 215 SCIC
2009 230 Wake 255 HO
2009 GTI 130
2009 GTI RENTAL 130
2009 GTI SE 130
2009 GTI SE 155
2009 GTX 155
2009 GTX 215
2009 Islandia SE 215 SCIC
2009 RXP 215
2009 RXP-X 255 / RS
2009 RXT 215
2009 RXT-X 255 / RS
2009 Speedster Wake 215 SCIC
2009 Wake 155
2009 WAKE PRO 215
2018 Wake Pro 230
2018 Wake 155
2018 Spark 900 Ac
e 2018 RXT-X 300
2018 RXT 230
2018 RXP 300
2018 GTX LTD 300
2018 GTR 230
2018 GTI SE 155
2018 GTI LTD 155
2018 GTI SE 130
2018 GTS 90
2019 GTI 130 Rental
2019 GTI 155
2019 GTR 230
2019 GTX 155
2019 GTX 230
2019 GTX 300
2019 Fish Pro
2019 RXP 300
2019 RXT 230
2019 RXT 300
2019 900 Ace
2019 900 HO Ace
2019 Trixx
2019 Wake 155
2019 Wake Pro 230
2020 GTI 90
2020 GTI 130
2020 GTI SE 130
2020 GTI SE 170
2020 GTR 230
2020 GTX 170
2020 GTX 230
2020 GTX 300
2020 RXP 300
2020 RXT 300
2020 900 Ace
2020 900 HO Ace
2020 Trixx
2020 Wake 170
2020 Wake Pro 230
2020 Fish Pro 170
2021 GTI 90
2021 GTI 130
2021 GTI SE 130
2021 GTI SE 170
2021 GTR 230
2021 GTX 170
2021 GTX 230
2021 GTX 300
2021 GTX LTD 300
2021 GTX Pro 130
2021 RXP X 300
2021 RXP XRS 300
2021 RXT X 300
2021 RXT XRS 300
2021 900 Ace
2021 900 HO Ace
2021 Trixx
2021 Wake 170
2021 Wake Pro 230
2021 Fish Pro 170
