Please Note: There were 2 different regulators used on 2017-2018 Polaris Sportsman 570 models. Please compare your original to our pictures. Our RMS021-107099 regulator will ONLY replace an original that looks EXACTLY the same. Aftermarket replacement part for: Polaris General 1000 -- 2016-2021 Polaris General 1000 XP -- 2021 Polaris General 1000 XP4 -- 2021 Polaris General 4 1000 -- 2017-2021 Polaris Ranger 1000 Diesel -- 2014-2017 Polaris Ranger 1000 Full Size -- 2020-2021 Polaris Ranger 1000 XP -- 2017-2019, 2021 Polaris Ranger 1000 XP EPS -- 2019, 2021 Polaris Ranger 325 ETX EFI F/C -- 2016 Polaris Ranger 500 EFI F/C -- 2017-2021 Polaris Ranger 570 EFI F/C -- 2014, 2016-2021 Polaris Ranger 570 XP -- 2016 Polaris Ranger 900 -- 2017-2018 Polaris Ranger 900 XP -- 2014-2019 Polaris Ranger Crew 1000 XP -- 2017-2018, 2021 Polaris Ranger Crew 1000 XP EPS -- 2019, 2021 Polaris Ranger Crew 570 EFI F/C -- 2014-2021 Polaris Ranger Crew 900 -- 2016-2017 Polaris Ranger Crew 900 XP -- 2017-2019 Polaris RZR 1000 -- 2017-2019, 2021 Polaris RZR 1000 RS1 EFI F/C -- 2018-2021 Polaris RZR 1000 XP -- 2014-2021 Polaris RZR 1000 XP INTL -- 2014-2017 Polaris RZR 1000 XP Turbo -- 2021 Polaris RZR 4 1000 XP -- 2014-2018, 2021 Polaris RZR 4 1000 XP Turbo -- 2021 Polaris RZR 4 900 -- 2015-2018 Polaris RZR 4 900 XP Turbo -- 2017-2019 Polaris RZR 570 EFI -- 2017-2020 Polaris RZR 570 S -- 2017 Polaris RZR 570 Trail -- 2021 Polaris RZR 900 -- 2014-2021 Polaris RZR 900 INTL -- 2015 Polaris RZR 900 S -- 2016-2017, 2020 Polaris RZR 900 XP Turbo -- 2016-2019