Replace that cheesy stock plastic impeller with this billet aluminum version. CNC cut from 6061 aluminum, this impeller is a work of art and works great too. Installs just like the stock unit, no modifications necessary. Fits all 2008-14 Polaris RZR 800 models (Including RZR-S and RZR-4 models). Replaces Polaris part # 5433684. Made in the USA!