Cam Tools ensure correct cam timing when servicing timing belts chains head gaskets or other valve train repairs 1997 - 2002 4.6L and 5.4L Econoline F-Series Truck and 1997 - 2002 6.8L V10 Econoline 1997 - 2002 5.4L V8 Ford Expedition and 1998 - 2002 5.4L V8 Lincoln Navigator-r This tool is used with number 6477 (511545) Ford Camshaft Holding Tool Same as Ford number 303-569 T96T-6256- AR1 303-570 T96T-6256-AR2