Diamond Power Valve Cover Gasket Set works with Ford Expedition Explorer F-150 F-250 F-350 Super Duty Mustang Lincoln Navigator Mark LT Mercury Mountaineer 4.6L 5.4L V8 Triton SOHC Same day shipping when purchased before 3pm EST Fits: 2004-2006 Ford Lincoln Mustang F-150 Navigator Mark LT 4.6L 5.4L SOHC 24V V8 Our products are tested and meet or exceed OEM performance requirements All Gaskets are made with Premium quality materials to deliver a perfect fit on your cars engine 2 Year Warranty (This product must be installed by a certified professional mechanic)