Cold Air Intake for Ford F150 F250 (1997-2003) Expedition (1997-1999) 4.6L 5.4L EnginesCold Air Intake Kit for Ford F 150 F 250 Expedition V8 More Power And Breathing Ability This cold air intake kit is designed to replace the factory air box on 19972003 Ford F 150, F 250, and Expedition models equipped with 4. 6L or 5. 4L Triton V8 engines. The system reduces intake restriction by using larger diameter aluminum piping and a high flow air filter, allowing cooler, denser air to reach the engine. This results in improved throttle