Function: 1.This pump is more reliable than a pump that usually fails under normal load. 2.No wiring or modification is required. Judgment of common failures of gasoline pump assembly: 1.Difficulty in cold start 2.Engine stalling 3 Poor acceleration and insufficient power 4.The sound of the oil pump is loud 5.The oil level indication is inaccurate 6.The vehicle shakes during driving For: 2011 Polaris RZR 4 800 EPS /RZR 4 800 /RZR 800 /RZR 800 S/ 2012 Polaris RZR 800/RZR 800 S/RZR 570 /RZR 4 800 /RZR 4 800 EPS/ 2013 Polaris RZR 800 S /RZR 800 /RZR 570 /RZR 4 800 /RZR 4 800 EPS /RZR 800 S EPS /RZR 800 EPS/ 2014 Polaris RZR 800 EPS /RZR 800/ Package Include: 1 X Fuel pump module 1 X Retaining nut 1 X Rubber gasket