The C28-150 and the C28-150FR are the same in fit, form and function. The FR (factory rebuilt) designation was required BY a manufacturing process when the product line was originally purchased. That process is no longer required so the FR designation was dropped.
C28-150S: 24V/150A GD HIGH OUPUT ASSY-WITHOUT DEBRIS SHEILD
|C28-150S-FR, Factory New 28V/150A, without Debris Shield and Blast Tube
Dual cooling fans ensure effective cooling and unmatched durability even in low engine RPM/high output installations.
Plane-Power C28-150 line of FAA-PMA certified, 28V/150 Amp high output, gear-driven alternators.