Inside of the alternator, wires are rotated through a magnetic field by the crankshaft to convert rotational energy into electrical current. When it's time for a new 2011 Navigator alternator, come to AutoZone. All of our 2011 Lincoln Navigator alternators feature an output between 13.5 and 14.8 volts to power your accessories and keep your battery charged. Simply place your order and choose to pick up your purchase today at an AutoZone near you or get free shipping with next day delivery.