JS Alternators for Ford Mustang S197 (2011-2014) High Output 250 / 320 / 370 / 400 amp

Fitment:

This is a direct fit high-output alternator for the 2011-2014 Ford Mustang S197 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.

Plug:

This high-output alternator comes with a factory style plug so that your OEM plug will plug directly into the alternator. Therefore, with an OEM style regulator, it will have a factory voltage set point.

NOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. View our Regulator Options Here.

Pulley:

This alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1/2" - 1" shorter belt.

See this Blog Article for assistance in finding the correct shorter belt.

Big 3 Wiring:

When Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the Big 3 Wiring Upgrade Kit. It is recommended to use 1/0 100% copper wires for the upgrade. 

Learn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators