We are Grateful for YOU! This Driver Door Keyless Entry Module is designed for 1998-2002 Mercury Grand Marquis. It is an authentic OEM part with a Manufacturer Warranty of 3 months. The module's part number is 1W7T-13C791-AC. It is compatible with Mercury Grand Marquis and other vehicles that match the listed specifications. This product is sold under the categories of ECUs & Computer Modules, Starters, Alternators, ECUs & Wiring, Car & Truck Parts & Accessories, and Parts & Accessories on eBay Motors. Buy this genuine part to ensure the best performance and reliability for your vehicle.