Feature●One Year Unlimited Mileage Quality Guarantee●Fits Ford F-150 2004-2008 4.2L 4.6L 5.4L;Fits Lincoln Mark LT 5.4L 2006-2008●Installation: 2pcs Upstream + 2pcs Downstream●Before buying, check the “Select Your Vehicle” check (brand, model, year, engine, Note,The engine and Note in particular) at the top of the link to see if your car can be used.Description