I'm in need of a pointer to decode my tag attached to my rear axle:

Tag says:
8A4B 3.89:1
P75AG400BVB

It's bolted to my Sylva Striker (MKII , 1991 vintage) which makes me think it came from a MK2 Escort and is an English Axle (it has 8" drums).

Any pointers would be gratefully received.



[Edited on 11/1/21 by GrahamC]

[Edited on 11/1/21 by GrahamC]

3.89:1 must be the diff ratio.

The rest I've no idea.

3.89 ratio was fitted to 1300 Escorts (according to Haynes)
There are 2 types - Timken, where the diff carrier is bolted to the front of the axle housing, and Salisbury which has a cover plate
at the back of the housing to access the diff.