For 2011-newer 5.0L 4V Engine-5.4L (3V). For Vehicles Engine-6.8L (3V). For Vehicles Engine-5.4L (3V). For FD Vehicles Engine-5.4L (3V). Usage: Simple to use, you just need to rotate the crankshaft with the tool attached to the crank so that the slot in the handle locks into the bonnet dowel pin, ensuring that the engine is at the correct top dead center.