I think it's a BE3 gearbox.
(47x35)
(47x31)
Seems Citroen can't figure it out.
There are 47 teeth on the large cog on this fifth gear.
But the 35 or 31, dunno?
Closest dimension is the inner shaft but it's a whole 1mm bigger, I think when we're working with rather close tolerances, they wouldn't just 'make it up'?
Here's some measurements of the fifth gear.
Diameter = 90.5
Width = 26.7
Small cog teeth = 24
Big cog teeth = 47
Inside diameter = 32
Shaft splines = 22
Cheers




