Aeromotive 14127 fits Ford 99-04 5.4L Lightning and Harley 1/2 Ton Truck Billet Fuel Rail System. ManufacturerPart : 14127. Each Fuel Rail System provides a custom engineered installation solution. Featuring CNC-Machined Billet Fuel Rails and custom mounting brackets as well as all the necessary components and accessories required to perform a complete installation, in one box.