Coupler shaft and gear search

AA Ford Discussion Group relating to the repair and restoration of your AA Ford.
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Posts: 52
Joined: July 8th, 2017, 7:14 am
Body Type: 82B
Model Year: 1931

Coupler shaft and gear search

Post by wild4679 » January 10th, 2021, 7:21 am

I have two 31 AA's, one is the 131" WB and the other is the 157" WB. Both are in the "project" phase. I'm learning the gear on output spline of the transmission, (I believe part #AA4811) is hard to find. I also need the coupler shaft for each of these, because the female splines are worn. I think the shorter shaft is part # AA4815B. I've learned these are also hard to find.

Is anyone aware of a rebuilder who will re-machine the external splines on the AA4811 and the internal splines on the coupler shaft? Or, is there a better work-around?

Or, easier, is there a place to buy the rebuilt parts?

Bob C
Posts: 1350
Joined: April 24th, 2003, 11:50 am
Body Type: Mail truck, Stake tr
Model Year: 1931
Location: SO CAL

Re: Coupler shaft and gear search

Post by Bob C » January 10th, 2021, 7:50 am

There is a short wheel base one on Ebay right now. ... 7x&vxp=mtr

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