This component requires a core to be returned to JLG. JLG will provide a pre-paid UPS shipping label with the component. Simply repackage the core and place the UPS label on the outside of the box with the UPS driver. Return shipping charges will be responsibility of JLG. Please complete this process within 30 days of receiving the product. For additional questions, or if you did not a receive a return shipping label, please contact skytrak@jlg.com. Thank you for your business!