The Genuine Ford Valve Seats 6L3Z-6057-B are direct replacement parts for Ford and Lincoln vehicles from 2005 to 2014. These OEM valve seats come with a 1-year warranty and are designed specifically for models like the Expedition, Navigator, F-150, F-250 Super Duty, and F-350 Super Duty. With the manufacturer part number 6L3Z-6057-B, these valve seats ensure a perfect fit and high-quality performance for your vehicle.