The 5.4L used engine with VIN 5 and 3V setup is engineered for flex fuel vehicles, offering compatibility with both gasoline and ethanol. This feature makes it an eco-friendly and economical choice for modern vehicle needs. As a used engine, it combines affordability with advanced engineering, ensuring dependable performance under various conditions. Its three-valve SOHC design enhances power output while maintaining fuel efficiency. This used engine is ideal for those seeking a reliable and versatile solution for their flex fuel vehicles, providing excellent value and functionality.