Ford 3550 pto shaft replacement and decoding of model numbers

[c5dog]

I have a ford 3550 that is losing oil from around the pto shaft. Appears the shaft is bent as the fluid loss is quite large and the seal has already been replaced

New holland wants over$600 for a new shaft. This is the 34.9 inch shaft.

My numbers are: tractor C376195
Model K5012K unit 3D11B
Engine 3C09A
Trans 3A03C

Any help decoding is appreciated as well as possible sources for a pto shaft

Thanks
Keith