Order Includes: 1 x Water Pump Impeller. Compatible with Polaris models: Ace 500 2017-2019. Part Number: 5138875, 5137483. Dimensions & Measurements: Diameter: 44.9mm / 1.76", Width: 19.85mm / 0.78". We strongly suggest comparing the posted picture to the unit(s) that needs to be replaced..
