- Replacement Compatibility : This air filter replaces part numbers FA1778, 3C3U9601BC, 3C3Z9601BA, 4C3Z9601AA, A2991C, AF26152, CA9516, MA 1155, FA1746, 42731, CA4999, and P603577, ensuring a seamless fit and optimal performance for your vehicle. - Vehicle Compatibility : Designed specifically for Ford 6.0L V8 Super Duty models, this air filter fits F250, F350, F450, F550 (2003-2007) and Excursion (2003-2005). - Package Includes : You will receive 1 FA1778 Air Filter in this package, ready to enhance your vehicle's airflow. - Improved Engine Performance : Enhance your engine's efficiency by allowing for better airflow, which can lead to improved acceleration and overall performance. - Durable Construction : Made with high-quality materials, this air filter provides long-lasting filtration and effectiveness, protecting your engine from dirt and debris. - Easy Installation : Designed for a straightforward installation process, you can quickly replace your old air filter without the need for professional assistance. - Practical Scenarios : - Ideal for maintaining your vehicle's performance during heavy towing or hauling, giving you peace of mind on the job. - Great for everyday driving, ensuring your engine runs smoothly and efficiently on the road. - Perfect for off-road adventures, helping prevent dust and dirt from compromising your engine's performance. - Maintenance Reminder : Regularly replacing your air filter can prevent engine issues, resulting in fewer repairs and extending the life of your vehicle. Choose the FA1778 Air Filter for reliable performance that meets your Ford's specific needs.