Shop Nilight Radiator for Ford F-150 2005 2006 2007 2008 4.2L V6 4.6L 5.4L V8, Ford Expedition 2004 4.6L, Ford Expedition 2004-2006 5.4L V8, Lincoln Mark 2006-2008 LT 5.4L, Navigator 2005-2008 5.4L V8 in high quality. 100% leak tested to prevent coolant loss and keep the engine running efficiently. Increases the boiling point of the engine coolant to maintain efficiency. Maintains the pressure of the cooling system to keep the vehicle safe and well sealed.