PA Performance 05-09 Mustang GT 200 Amp Alternator


Manufacturer: PA Performance

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PA Performance 05-09 Mustang GT 200 Amp Alternator

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PA Performance 05-08 Mustang GT 200 Amp Alternator

200 Amp Ford Alternator 6G Family (2158HO)

This is a very popular replacement where slightly increased capacity is needed. This unit will increase the charging capacity at all RPM Ranges with NO modifications.

Common on Ford SOHC DOHC and some 3V Applications
This unit is a direct replacement with NO modifications
100+ amps at idle (2000 alternator shaft rpm)
200+ amps maximum (6000 alternator shaft rpm)
The stock belt can be used on original equipment vehicles
Actual Alternator Weight is 16.2 lbs
All units are 100% NEW and come complete with internal voltage regulator and pulley

To calculate the alternator shaft speed, which should be no more than 16,000 RPM do the following:

Alternator pulley size (ie 2.5")

Crankshaft Pulley Size (ie 5")

Ratio is 2:1 (5 / 2.5 = 2)

Max engine Speed = 5800 RPM

Multiply Max RPM x Ratio (5800 x 2) = 11,600 shaft RPM Max

Idle RPM = 1000

Multiply Idle RPM x Ratio (1000 x 2) = 2000 shaft RPM @ Idle


An alternator needs 1800-2000 at idle to make power and will make maximum output at 6000 rpm, and will start to fail at 16,000 RPM.


If you have Microsoft Excel, from Windows 95 to current, you can download and open this calculator.  Only fill in the yellow fields!  It will tell you the rest.

Manufacturer PA Performance

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  • Mustang GT 2005,2006,2007,2008