Brand New Polaris OEM Factory Replacement Front Gearcase differential 1337133 for Polaris RZR 570 800 and 900, Ranger 1000, and Ace . Genuine OEM Factory Polaris Part. Brand new, not rebuilt. Replaces the following part numbers:  1332842, 1332923, 1333104, 1333105, 1333285, 1333750, 1334309, & 1334266