New replacement engine valve stem seal. Steel shell with Viton seal. Exact replacement seal to the original. Replaces Polaris 3610212 and 3610199. Sold EACH. Single cylinder models use 4 per engine while twin cylinder models use 8 per engine. Fits the following models and more: 2016-18 General 1000 2016-18 ACE 900 2015-18 ACE 570 2014-18 Ranger 570 2013-18 Ranger 900 2018 Ranger 1000 2014-18 RZR 1000 2013-18 RZR 900 2013-18 RZR 570 2016-18 RZR Turbo 2014-18 Sportsman 570 2016 Sportsman 450