【Vehicle Fitment】Effoexparts starter motor compatible with Polaris Sportsman 550 EFI EPS 2010-2014 / X2 550 2010-2014 / XP 550 2009-2014 / Forest 550 2011-2014 【Interchange Part Number】OE# 3090221, 3090163, 22-19089, STO0491, RN19089, 463736, 71-26-19089 【Function】A starter is a device used to rotate (crank) an internal-combustion engine so as to initiate the engine's operation under its own power. The starter can also be another internal-combustion engine in the case, for instance, of very large engines, or diesel engines in agricultural or excavation applications 【Installation】1.Disconnect the car battery and locate the starter under the hood. 2. Disconnect the wiring from the starter’s solenoid (terminal). 3. Unscrew the retaining bolts that hold the starter in place and remove it. 4. Slide a new, identical starter into position where the old one was. 5. Reinsert the retaining bolts and reconnect the wiring and battery. 【1-Year Manufacturer】Effoexparts is committed to providing better service and products to our customers, we make sure that every assembly line is harshly inspected and 100% tested before assembly to ensure as much as possible that the product will not have problems. If you encounter any problems during the use of the product, please leave us a message, we will give you a satisfactory answer within 18 hours! 1