Check the listing for details. Genuine GM Passenger Side Body Side Outer Panel Rear Lower Extension 13465760. Condition: New. Listed at 13.08 USD. Also known as: Extension. Function: Supports and reinforces the rear lower body panel on the passenger side. Applies when you include your VIN during or before checkout. If we cannot correct your order, we will notify you of the issue (ex: discontinued item) and give you the option to cancel.