Sold each.This item fits the following vehicle applications:compatible with Ski-Doo Summit SP E-TEC 600 HO 146 2013-2018compatible with Ski-Doo Summit SP E-TEC 600 HO 154 2013-2018compatible with Ski-Doo Summit SP E-TEC 800R 146 2013-2017compatible with Ski-Doo Summit SP E-TEC 800R 154 2013-2017compatible with Ski-Doo Summit SP E-TEC 800R 163 2013-2016compatible with Ski-Doo Summit SP E-TEC 800R 174 2017compatible with Ski-Doo Summit SP E-TEC 850 146 2018compatible with Ski-Doo Summit SP E-TEC 850 154 2017-2018compatible with Ski-Doo Summit SP E-TEC 850 165 2017-2018compatible with Ski-Doo Summit SP E-TEC 850 175 2018compatible with Ski-Doo Summit Sport 600 Carb 2013-2019compatible with Ski-Doo Summit Sport Power TEK 800R 2013-2016