speedo drive for 2002 automatic micra

hi,
My speedometer stopped working on my 2002 micra 1.4L automatic and ive been told my my mechanic that i need a replacement speedo drive part no 25010-6F610.
I cant find this anywhere on ebay or any of the online breakers yards
Dont know if its so difficult ot find becasue the car is automatic but please let me know if anyone has any sugegstions for where i can find this part or if i could use the equivalent part from a manual, becasue ive seen a few of them advertised
thanks
 
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