alternator rotation

2 posts / 0 new
Last post
Mike Newbery
Posts - 1
alternator rotation

In general can I change an alternator's rotation just by changing the fan?

 If not please say why (so I can understand the problem)

Discussion:- I want to fit a second / reserve alternator, and can only fit a unit in the "opposite direction".

 I have available 8LHA and 110-444 24V 70+ amp units both of which are CW rotation.

(The next challenge would be to source the fan!)

May be a dumb question - but if one doesn't ask...

Prestolite Electric
Arcade, NY USA
Posts - 1204



You are correct, the only determining factor when it comes to alternator rotation is the fan.  We have a bi-directional fan for the 8LHA and its part number is 107-120 (Raw, No coating) or 107-115 (E-Coated).  As for the 110-444 a bi-directional fan does not exist.


Good day,




Post new comment

The content of this field is kept private and will not be shown publicly.
  • Lines and paragraphs break automatically.
  • Web page addresses and e-mail addresses turn into links automatically.

More information about formatting options

Refresh Type the characters you see in this picture. Type the characters you see in the picture; if you can't read them, submit the form and a new image will be generated. Not case sensitive.  Switch to audio verification.