The Oil Pump Balance Shaft Assembly 23300-2G520 by Jumach is a direct replacement part designed specifically for 2.4L Kia Optima and Sorento models from 2012 to 2015, as well as select Hyundai vehicles. This shaft balance oil pump comes with a 1-year manufacturer warranty and is a crucial component for maintaining proper engine function. With interchange and OE/OEM part numbers provided, this assembly ensures a perfect fit and reliable performance for the specified vehicle models.