Sestaks # is 401635210375. Not sure if I put it down wrong on my first Post. Anyway it is there along with the other One. Green Auto Parts is out of Stock. There are several "Watchers" on both those Listings.

  

Paul2748.  Oldcarmark is correct.  There are (were) two '57 'Bird distributor shafts offered on eBay when the info was originally provided here on our Forum.  Ebay seller Tom Sestak has either withdrawn his distributor shaft listing or sold the shaft he had listed.
 
Paul, when you bring-up the eBay Motors web page, enter the eBay listing number in the space near the top of the page just to the right of the red eBay name.  Look for the faint lettering 'Search for Anything' and enter the listing number there.  After entering the number, click the blue Search button to the far right.
Enter just one number for each time you search.  401635210375  is (was) one.  122026929280 is the second.  In checking this morning, Tom Sestak's 401635210375 listing no longer shows.

Kultulz's Ford part number for the '57 'Bird distributor shaft is correct.  B7S 12175-A  Other Forum members are correct, one of the numerous 'T-Bird parts suppliers or Green Sales may have one of these shafts in stock.  I don't think of it as a part in high demand

Frankly, I'm surprised that the shaft in your distributor was bent. I'm unclear how that could have happened with the bushing supporting it high in the distributor body and the engine block supporting the end of the distributor shaft below the distributor gear.


NoShortcuts
a.k.a. Charlie Brown
near Syracuse, New York

The Tbird distributor shaft seems to be a one year only (unless the 55 and 56 are the same) as it's longer and has the tach drive as part of it.

The 55/56  BIRD (B5S 12175-B) is LOAD-O-MATIC whereas the 1957 BIRD (B7S 12175-A) is DUAL ADVANCE. There is your difference.

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Paul the #'s I provided on my first Post are listing #'s on Ebay if that is what You are referring to. 2 Shafts for Sale under the Part # that Kultulz provided.

  

NoShortcuts:  I will be looking for one as soon as I get the distributor back (the shaft has been removed but deemed bent).  Any help you can give is appreciated.  I will contact you when I am ready.  While I have a replacement distributor, if I can fix the old one it will be good.





54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ

Oldcarmark - neither number works.  I got the number from  KULTULZ  below   (B7S 12175-A )

To the others that replied, thanks.  The Tbird distributor shaft seems to be a one year only (unless the 55 and 56 are the same) as it's longer and has the tach drive as part of it.





54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ

I believe the shaft is longer than the one used in the more common car distributor  to accommodate the tach drive gear.

I see that they are different. It looks to me that assuming the actual shaft dimensions are the same (and they may not be) the business end of your existing unit could be pressed on to a plain jane replacement shaft for considerable savings. See the roll pin in the pic?

The 55/56 and 57 BIRD DIST SHAFTS are unique in that the DIST has a cable driven TACH drive.

1957 is going to be the most unique (B7S 12175-A) in that it was a one year only production piece.

IMO, one is lucky just to find two NOS shafts readily available.

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Whatever the Difference these Shafts are specifically T-Bird. I assume the Tach Drive is the difference. B7S prefix. The "S" indicates Thunderbird only. The regular Ford Shafts would be B7A. As I mentioned there are other Sources to check if You have the Part #. Maybe cheaper. Even a Google Search may turn up One for more reasonable Price.