185 Amp Series Alternator for 6.0L
From FICMrepair.com

We stock alternators for Ford trucks, but have access to numerous other alternator options for the various makes and models out there. If you have a specialty need, please Contact Us!
185 Amp OEM for FORD Powerstroke 6.0L.
This alternator puts out at idle what the factory 110 amp unit does at its peak! If you are looking for the largest alternator you can get without having to upgrade the factory's wiring, take a look at the 180 amp unit as it does about 1/3 more output at idle than this unit while still being a drop-in replacement.
Alternator failures cause FICM failures due to low voltage from the lack of alternator power that comes from the Ford factory. DC Power’s units exceed the expectations of Powerstroke 6.0 owners by proudly using brand new OEM Delco Remy alternator components such as the Stator, Rotor, Rectifier and Regulator to give our customers piece of mind due to the inferior Motorcraft 6G alternator design that simply does not hold up to DC Power strict standards. DC Power decided to use their own proprietary casing to create a direct fitment without any modifications needed and provide you with an adapter harness to plug right into your factory alternator harness to be hassle free. Because DC Power sources all OEM parts directly from the source, all of their products come with a 2-year warranty. If for any reason your alternator ever needs service, they offer free lifetime labor on all units; simply pay for the parts and they will take care of it.
Specifications:
Hot idle output: 100 amps
Cold idle output: 120 amps (to better offset the 230 amp glow plug draw)
Max output: 185 amps
Hot max output: 150 amps
Do you want more idle output or just live in a colder climate? The 180 HP is in stock and puts out a third more amps at cold idle to better offset the load from the glow plugs running longer in colder weather. More load offset results in a longer life for your high-dollar batteries. No battery cable upgrade is necessary for either the 185 or 180 amp units.