Dual Generator
WARNING: This page is about a different car, the 2006 Ford Pickup, 2006 Ford F550 Super Duty, and 2006 Ford F450 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
The dual generator package consists of an upper/lower generator system (diesel only). The 6.0L upper generator is a 140-amp generator with a 2.79:1 pulley ratio. The 6.0L lower generator is a 120-amp generator with a 3.00:1 pulley ratio. The upper and lower generators are not interchangeable.